: Tire size for 10" rims?



tommy compton
01-10-11, 02:15 AM
Shipped off my stockers to get widened to weldcraft wheels to 10".
I have MAP trailing arms and am lowered 2" in the rear.
I'm trying to decide on tire size either,
285/40/18
or
295/35/18
I will be rolling my rear fenders but I'm wondering if the 295's will stick outside the fender? or if on a 10" rim that won't be an issue.
Some one on the CTS_V parts page is apparently running 295 on gc lowered 1.5" in the rear, with an 8mm spacer. I won't be running a spacer so it would run inside more.
Obviously I would prefer a 295, and there is better tire selection in 35 profile.
Any insight?

JD03Cobra
01-10-11, 10:39 AM
Den_93 had these GM wheels widened to 9.75" from the same company. He's running Goodyear GSD-3's 275-40-18's...they run wide, more like 285's. I would think on a 10" rim 295's would fit perfect...mounting to a lowered car may be a different story.

http://i106.photobucket.com/albums/m276/JD03Cobra/P8154114.jpg

tommy compton
01-10-11, 12:07 PM
I may go with the 285's just to play it safe(r). There is a Nitto streetable drag radial with decent wear. Hopefully I can get 2 summers out of them,
and not destroy my rear.


http://www.discounttiredirect.com/product/tires/nithz7.ang.jpg
http://www.discounttiredirect.com/direct/findTireDetail.do?pc=40504&counter=3&ar=40&rd=18&sw=false&cs=285

WesH8398
01-10-11, 04:08 PM
Your aftermarket trailing arms might change the situation, but I've read in many places that 275's are as wide as you can run with lowered suspension, non-rolled fenders, and no rubbing.

PJGross
01-10-11, 04:46 PM
I'm very interested to see how this turns out. I have 275/40 18s (the same F1 GS D3s as above) on the rear of mine with stock height and rims and no problems rubbing anything. While the rims are off for winter, I was thinking of getting them widened and going with different width tires in spring.

I like the idea of the 295/35s because they're slightly shorter than stock vs 285/40s slightly larger. I was thinking of going 295/35s in rear and 255/40s in front to get the difference down to .4% which shouldn't effect the abs/stability/etc.

I was hoping to do this with just the MAP arms and slightly widened rims.

I wouldn't think 295s on 10" rims would stick out any further than my 275s on stock rims, which are noticably past the rim lip. You're gaining well over an inch on rim width and under an inch of tread width.....but I'm not lowered, so I'm not sure how things tuck when you're not "trucking" like me. :)

Please get this done before spring so I can pull the trigger on some widened rims!

-PJ

-PJ

tommy compton
01-11-11, 12:45 AM
It will be spring when I put them on. If nobody chimes in to reassure me I'll be going with the 285's.
I also just ordered up some powergrid adjustable endlinks. I can hopefully tighten up my rear Eibach sway, to help counter understeer. Will be grabbing some BMR toe rods too, so I don't rub from camber.

PJGross
01-11-11, 10:39 AM
^^^ok, I'll just drive on snow tires a bit longer. :)

Rim wise, I would have to search, but 10" (widened stock rims) with MAP arms, would 275s hit anything else at stock height? That could be a default, and I'll remount my old tires after getting the rims widened to check for clearance before going wider with the new tires.

WesH8398
01-11-11, 11:10 AM
As I said earlier, lots of guys are running 275 tires on 10" rims, stock trailing arms etc, lowered, fenders not rolled, and they say they are issue-free.

tommy compton
01-11-11, 12:14 PM
Good to know, If I'm dealing with only 5mm more to the outside than 275's rolled fenders may do the trick, for 285's.
But check out #3 on the cts-v tire size page,
says he's running 295/35/20 lowered 1.5", with an 8mm spacer. He must be way outside the fender with the spacer, thats why ithought maybe it would be possible without the spacer to be inside the fender. But yes from what I have read 295's stick out, but unsure of what rim size people had them on, somepeople jamming them on stock 8.5, or others with 9.5, or 19/9's. Also I know people who were running 295's were also running spacers to clear the trailing arms, but do to stock ride hieght were O.K..

PJGross
01-11-11, 08:39 PM
As I said earlier, lots of guys are running 275 tires on 10" rims, stock trailing arms etc, lowered, fenders not rolled, and they say they are issue-free.

Sorry, that last post of mine didn't come out right. I'm running 275s now with no rubbing on stock rims. Your post didn't say anything about 10" rims. I was wondering if in taking a stock rear to 10" would interfere with anything else (like putting the tire in contact with any body areas, inner fender wells, etc which was discussed in that MAP debacle of a thread in regards to wider tires, so I've given up on 305 or 315s for now)

If you're saying a 10" stock widened rim will fit even with stock arms and no wheel spacers then it would be a no brainer for me, I'd just get them widened to 10" and be done with it. However, looking at the clearance of my 275s at stock width to my trailing arms, I have a hard time thinking that I wouldn't get them to rub on the stock arms with that extra rim hanging back there and no wheel spacers, even with the 275 width that doesn't rub now.

JD03Cobra
01-11-11, 11:02 PM
If you're saying a 10" stock widened rim will fit even with stock arms and no wheel spacers then it would be a no brainer for me, I'd just get them widened to 10" and be done with it.

I'm pretty sure a widened stock rim at 9.25" requires a small spacer. 9.5" wide may require longer wheel studs but not totally sure. I've seen a few pictures of 10" stock rims but are really close to the stock trailing arm...Too close for me. I want to widen mine to 9.5" but not really interested in longer studs since I run a second set of stockers with snow tires for the winter.

I'm running 275's on 8.5" stockers now.

http://i106.photobucket.com/albums/m276/JD03Cobra/CTSV6.jpg

WesH8398
01-11-11, 11:29 PM
Sorry, that last post of mine didn't come out right. I'm running 275s now with no rubbing on stock rims. Your post didn't say anything about 10" rims. I was wondering if in taking a stock rear to 10" would interfere with anything else (like putting the tire in contact with any body areas, inner fender wells, etc which was discussed in that MAP debacle of a thread in regards to wider tires, so I've given up on 305 or 315s for now)

If you're saying a 10" stock widened rim will fit even with stock arms and no wheel spacers then it would be a no brainer for me, I'd just get them widened to 10" and be done with it. However, looking at the clearance of my 275s at stock width to my trailing arms, I have a hard time thinking that I wouldn't get them to rub on the stock arms with that extra rim hanging back there and no wheel spacers, even with the 275 width that doesn't rub now.

I think I'm getting mixed up here too, sorry. Obviously, widening your wheel isn't going to make your tire any wider ... a 275 will remain a 275. But my VERY limited knowledge of wheel widening would tell me that you would have issues with the offset of the widened wheel. For example, the wheels I just bought (Linea Corse Venetto's) are 10" wide in the rear and lots of people are running those without any clearance issues (lowered in a variety of ways, or stock height). BUT, those 10" wide wheels have a +47 offset. The OEM wheels are a +42 offset. I'm just taking a guess at this, but widening that wheel would just involve adding material to the inner edge of the wheel, right? From what I know about what wheel offset is, adding to just the inner edge of the wheel would effectively be subtracting offset ... kinda sorta? Someone correct me if I'm wrong. If I'm right, then yah, you're likely going to have clearance issues with trailing arms and maybe other things. I just don't think the tire really has much of anything to do with it ... does it?

Reference:

Den_93
01-11-11, 11:30 PM
I'm running 255/40/18 on Front stock wheels and 295/35/18 on back with widen stock wheels to 9.75 and coilovers about 1.5in lowered. I have the MAP trailing arms, longer studs and an 8mm spacer. My rear wheels do not stick past the fender well at the top. I was being conservative when I did my setup. I think you can go 10in wide rim with a 5mm spacer (non-hub centric) and the MAP trailing arms (not sure if you need longer studs, it will be close). Don't use the anything less than 5mm for a spacer because they will probably crack. The size spacer will depend on which tire you use. The largest spacer you can go is about 14mm before you stick past the fender well with my 9.75mm wheels.

tommy compton
01-12-11, 12:00 AM
^^^ Thank you, that is the info I needed. Where did you buy you spacers from? and why not hub cetric?

JD03Cobra
01-12-11, 12:46 AM
I'm running 255/40/18 on Front stock wheels and 295/35/18 on back with widen stock wheels to 9.75 and coilovers about 1.5in lowered. I have the MAP trailing arms, longer studs and an 8mm spacer. My rear wheels do not stick past the fender well at the top. I was being conservative when I did my setup. I think you can go 10in wide rim with a 5mm spacer (non-hub centric) and the MAP trailing arms (not sure if you need longer studs, it will be close). Don't use the anything less than 5mm for a spacer because they will probably crack. The size spacer will depend on which tire you use. The largest spacer you can go is about 14mm before you stick past the fender well with my 9.75mm wheels.

Any reason why 9.75" was your magic number? Did you ask for 10" but turned out 9.75" for whatever reason?

yooper
01-12-11, 01:26 AM
What does it cost to widen stockers and where in the wheel are you adding width?

tommy compton
01-12-11, 03:22 AM
I believe it's around 250ish a wheel, and they add width to the backside of the rim. I found a place to get wheel spacers made, some members here have got them done.
http://www.wheeladapter.com/
I think I'll pick them up just incase I need them.
Why can't anything done to our cars be done cheap?

JD03Cobra
01-12-11, 09:39 AM
What does it cost to widen stockers and where in the wheel are you adding width?

This guy comes highly recommended located in Liviona, MI.

http://www.weldcraftwheels.com/

tommy compton
01-13-11, 02:09 PM
here's the break down in price,
Wheels widened to 10" at Weldcraft wheels
235.00 each + shipping
http://www.weldcraftwheels.com/

5mm wheel spacers from Wheel adapters,
50.00 a piece + shipping
http://wheeladapter.com/

Fred at wheel adapters is a super nice fellow, 74 and still spry.

tommy compton
01-13-11, 05:27 PM
Just had to mention, I placed the order today for the wheel spacers. He made them and is shipping them out today too, how's that for spry.

PJGross
01-13-11, 05:31 PM
Hey Dennis, which is it, 9.75 or 10? I think when we were PMing you mentioned 10". :)

I was re-reading the wheel widening thread and I was trying to figure out what would hit next after the trailing arms. I guess if I could avoid a spacer and still run the 295 that would be the sweet spot. I have stockers and winter tires too, so it would be a pain, but I guess running the spacer and longer studs year round wouldn't hurt anything, right? An offset track in the winter might help traction? :)

-PJ

Den_93
01-13-11, 09:32 PM
When I measured it initally, with the car jacked up, it was hitting at 9.75. After I lowered the car on the ground, it had more room (maybe a 1/2 more?). I think you can get away with 10in. but it is going to be close. I went with 9.75 because I was being conservitve, but every car/tires could be different. In the spring, we can meetup and we can mount my wheels on your car, but you will need the MAP trailing arms. The bad part is, I still can't get traction with 295's. I have some 305 Drag Radials on some Fikse I am going to try at the track.

JD03Cobra
01-13-11, 11:39 PM
Dennis - Not sure if I'm clear on this but did you need the MAP trailing arms at 9.75" with spacers?

Den_93
01-14-11, 11:02 AM
Yes, you do need MAP trailing arms w/ 9.75. For the spacers, it depends on what tire you use, its very close and hard to measure without a hoist. Without spacers on my car, it looked like I had very little room, but I have the extended studs, so I couldn't get the lug nuts to bottom out to find out for sure.

I need to find some open ended lug nuts to try it.

garrettg
01-14-11, 11:54 AM
Is 9.5 on the stock wheel the max then for stock trailing arms?

Does the wheeldude's 19x10's fit because the offset +47/backspace ends up being less than on a 10inch widened stock rim (+40 + widening) based on the extra material added to the inside of a stock rim?

WesH8398
01-14-11, 12:22 PM
Is 9.5 on the stock wheel the max then for stock trailing arms?

Does the wheeldude's 19x10's fit because the offset +47/backspace ends up being less than on a 10inch widened stock rim (+40 + widening) based on the extra material added to the inside of a stock rim?

That's what I was trying to say in my previous post.

tommy compton
01-31-11, 05:19 PM
Just ordered Nitto nto5 295/35/18's for my rears, got my spacers and praying the mod gods are in my favor.

JD03Cobra
01-31-11, 05:43 PM
Just ordered Nitto nto5 295/35/18's for my rears, got my spacers and praying the mod gods are in my favor.

Excellent! Did you get the rims back? Also what size spacers did you go with?

tommy compton
01-31-11, 07:33 PM
Rims aren't back yet, but I got my 5mm spacers. I actually had to change my tire choice to BFG g-force something or other, apparently nitto won't allow shippment of their tires to Canada from the US (price is too low) I'm actually pretty dissapointed by it, but not enough to pay higher prices up here.

tommy compton
02-08-11, 03:08 PM
Got my tires in today, rims will be here tomorrow, then off to powder coat.
http://i36.photobucket.com/albums/e29/tommycompton/bfg.jpg

RADARB8
02-08-11, 10:19 PM
It will be spring when I put them on. If nobody chimes in to reassure me I'll be going with the 285's.
I also just ordered up some powergrid adjustable endlinks. I can hopefully tighten up my rear Eibach sway, to help counter understeer. Will be grabbing some BMR toe rods too, so I don't rub from camber.

I put 285/40/18 on my stock rims with the crappy MAP arms.....I am pretrty low with the Eibachs with the f2 shocks....The reason for me mounting them on the small rim was because after spending a fortune on getting my rims widened to
10-3/8ths...for the 305's that would not even come close, i wanted to see if the285/40/18 would clear and it does....no problem .....if that helps any....also, to everyone it is very very dangerous driving on 8.5 rims with a 285...while doing some serious highway agressive driving i had to pass a vehicle in traffic while braking and the V went almost entirely out of control....i let off the brake and had to pick up my speed or i would have rolled it...very scary:bigroll:when i got home i let out about 10 psi on each tire and it helped a lot but still is not safe.. Anyway, my rims should be done this or next week...I had them narrowed from the 10-3/8ths to 9-3/4's....They will work great on the 285's...BUT, i am hoping they will not only fit with a 295/35/18 but that losing 1/4" of rim the V will handle ok for a 10" rim is suppossed to be the minium when running a 295..LIKE I SAID 285's YOUR OK:yup: 295"s:hmm::hmm:

ps: one more thing about my near rolling the car....my MAP rear trl. arms are torqued about 40 to 50 less on the rear red bushing so as not to squish them......That might, i am[ not sure,], have also contributed some to the car swerving severly when driving agressive...

RADARB8
02-25-11, 01:56 AM
After i spent over $850.00 to have my rims widened to 10-3/8ths MAP was way off with his calculations...I took them back to the machine and spent another
$500 even to cut them down to 9-3/4"...300 to narrow and 200 to shave the weld so it looks stock...i am hoping to put on 295/35/18's now with no spacer..I did some measuring and i think it will work..The shop called me last tuesday and said they were done...now i need 295 tires to check out the fit. i want Nitto's but not sure if they carry that size..:thepan: i would like to put some sticky drag radials on the V.........When i find some rubber i will post my results.:alchi:GREG O

Stepside
02-25-11, 10:53 AM
:helpless:WOW!!!! what a nightmare or Wheelmare:suspense:Nightmare. . Damn, should of just bought CCWs.
:coffee: I hate seeing what you went through, but you've learned alot :wisdom: (considering your age :duck: :hide:)

and we learn from others. :thumbsup:
------------------------- ~:vulcan:~

rand49er
02-25-11, 11:01 AM
Alright you guys ... you've got my head spinning after reading this thread.

I don't have the MAP trailing arms, and I'm lowered about 3/4" (~19mm). I've got a set of staggered wheeldude wheels coming (8.5 x 19 fronts and 10 x 19 rears with 47 mm offset). To be sure about this, can anyone assure me that I won't have any problems using 245/40zr19 for the front and 275/35zr19 for the rear? Unlike Greg, who seems to have a doggone money tree in his yard, I don't want to plunk down a thousand bucks and have issues. Thanks.


Here's what's in the faq:

"What is the largest wheel or tire that will fit on the V?
Wheel Width
I’m sure you can use 9X20 on the V but the ride will be crap.

Given the front geometry 9 in the front is the max and as high as 10 in the rear.

I wouldnt get bigger than a 19” wheel.
Tire size
255/35/19 Front
275-285-35-19 rear
You have to stay within the 26.6” tire diameter within a few points.

A 27 inch or a 25.5 might cause problems.

thanks Lastss "

JD03Cobra
02-25-11, 11:54 AM
Randy - I don't think your going to have a problem with that setup. There are other V's lowered with the Veneto wheels similar size. Here is a quote from Wheeldude on the Veneto's.

"This model will not rub on the fenders, even on a lowered car (with recommended 275/35/19 rear tires). We have had some customers run wider 285's and none have reported rubbing however it will ultimately depends on your ride height and alignment settings.

-Dan "
http://www.cadillacforums.com/forums/2004-2007-cadillac-cts-v-appearance/200214-linea-corse-pics-2.html

Stepside
02-25-11, 11:54 AM
I run CCWs on a stock suspension.
Front wheel is 19x9. Tire is 255/40/19 Hankook*
Rear wheel is 19x10. Tire is 285/35/19 Hankook
Even though you are lowered 3/4ths, I think you will be safe.

RADARB8
02-25-11, 05:56 PM
Alright you guys ... you've got my head spinning after reading this thread.

I don't have the MAP trailing arms, and I'm lowered about 3/4" (~19mm). I've got a set of staggered wheeldude wheels coming (8.5 x 19 fronts and 10 x 19 rears with 47 mm offset). To be sure about this, can anyone assure me that I won't have any problems using 245/40zr19 for the front and 275/35zr19 for the rear? Unlike Greg, who seems to have a doggone money tree in his yard, I don't want to plunk down a thousand bucks and have issues. Thanks.


Here's what's in the faq:

"What is the largest wheel or tire that will fit on the V?
Wheel Width
Im sure you can use 9X20 on the V but the ride will be crap.

Given the front geometry 9 in the front is the max and as high as 10 in the rear.

I wouldnt get bigger than a 19 wheel.
Tire size
255/35/19 Front
275-285-35-19 rear
You have to stay within the 26.6 tire diameter within a few points.

A 27 inch or a 25.5 might cause problems.

thanks Lastss "

Re: Tire size for 10" rims?
WOW!!!! what a nightmare or WheelmareNightmare. . Damn, should of just bought CCWs.
I hate seeing what you went through, but you've learned alot (considering your age )

and we learn from others.
------------------------- ~~ Re: Tire size for 10" rims?
WOW!!!! what a nightmare or WheelmareNightmare. . Damn, should of just bought CCWs.
I hate seeing what you went through, but you've learned alot (considering your age )

and we learn from others.
------------------------- ~~
It has been a nightmare,:mad: and still waiting to get new bushings made up...I still have 4 new 305/30/18's to sell Toyos and Perelli's:bigroll:fyi. i don't reccomend it but i put a new set of fulda carret's 285/35/18's on the rear on my stock 8-1/2" rims... i have Eibachs and sitting pretty low and there is no problem clearance wise. So the worst situation would be 285's on my 9-3/4" widened stock rims:alchi:

tommy compton
03-28-11, 02:53 AM
Updates on this topic here finally installed
http://www.cadillacforums.com/forums/2004-2007-cadillac-cts-v-appearance/223387-stockers-powder-coated-widened-pics.html