: biggest rear tire on stock rim?



dynojetman
05-05-09, 02:48 PM
Just curious. I am not a tire guy.. What is the widest tire we can fit on the stock rims? My car has very limited traction and I would like to stuff a larger drag radial out back if possible.

uwood
05-05-09, 02:51 PM
The FAQ says 275.

zie
05-05-09, 02:52 PM
If you would have SEARCHED, you would've found the answer!!! duh
lol, I'm just saying that cause I just asked the question too and should've searched first.

The responses I got were that people do put a 275 on the stock rim, but it is a bit big for it. I think 265 should be fine (hopefully cause that is the one I am buying). A 235 should fit fine on the front right? (sorry for the thread jack)

uwood
05-05-09, 02:59 PM
If you would have SEARCHED, you would've found the answer!!! duh
lol, I'm just saying that cause I just asked the question too and should've searched first.

The responses I got were that people do put a 275 on the stock rim, but it is a bit big for it. I think 265 should be fine (hopefully cause that is the one I am buying). A 235 should fit fine on the front right? (sorry for the thread jack)

Yes. I have 245 all the way around with no issues.

shadybx7
05-05-09, 03:07 PM
A 235 should fit fine on the front right? (sorry for the thread jack)

it will fit but WHY would you go smaller then stock??? :hmm:

dynojetman
05-05-09, 03:11 PM
sorry guys I am still new to this site and trying to figure out how to search. I should of looked more. they come stock 245 45 18 so if I keep 245 45 up front your all saying a 265 45 18 should fit ok in the back?

zie
05-05-09, 03:12 PM
Cause the tire set I am looking at comes with 2 235s and 2 265s.



Yes. I have 245 all the way around with no issues.

I would hope so, that is the stock size ;)


edit*
Yes dyno, 265s on the back will be fine!

oh, and the faq just explains the largest tire you can put in the wheel well, it isn't for the stock rim.

4DoorGTZ
05-05-09, 03:19 PM
If you're going 265 you should step down to a 40 series, less sidewall, better handling and its closer to the stock size for your speedo and traction control.

265-45-18 2.7% slow
265-40-18 1.3% fast

http://www.miata.net/garage/tirecalc.html <---Great for checking sizeing vs stock to keep your rolling diameter as close as possible, has nothing to do with tire width vs rim width though.

CTSV_510
05-05-09, 03:30 PM
I have 265/40s and they work good.

bpitas
05-05-09, 03:46 PM
I have 255/40s (currently GSD3s and I had KDW2s) and they don't rub at all on a lowered car.
My next set I will probably try 265/40 all around.

jerrycecco
05-05-09, 04:31 PM
Mich PS2 265 here...

whisler151
05-05-09, 04:42 PM
275 in the rear work fine for me. 245/40 front 275/35 rear.

http://www.cadillacforums.com/forums/picture.php?albumid=138&pictureid=2738

deedubb
05-05-09, 04:49 PM
Whats the biggest size tire that'll fit with GC's on their lowest setting? (stock wheels)

whisler151
05-05-09, 04:51 PM
Whats the biggest size tire that'll fit with GC's on their lowest setting? (stock wheels)

275...just drop the profile. Mine are 275/35

dynojetman
05-05-09, 04:56 PM
whisler, do you have any problem with the rear tires wearing uneven on that wide of a tire?

JD03Cobra
05-05-09, 04:57 PM
Eagle GSD 275/40/18's in rear, no drop, no rub. Tire runs wide.

http://i106.photobucket.com/albums/m276/JD03Cobra/V7.jpg

whisler151
05-05-09, 04:59 PM
whisler, do you have any problem with the rear tires wearing uneven on that wide of a tire?

Ever since I drove it off the lot the tires have worn on the inside. This will be the first summer with the 275s so we will see how they do. (I drive a lot harder when the weather is nice)

dynojetman
05-05-09, 05:07 PM
ok i was just curious if they balloon a little and wear funny.. Let me know. I will need a new set of tires soon and I am just trying to decide what I can get away with.

whisler151
05-05-09, 05:14 PM
ok i was just curious if they balloon a little and wear funny.. Let me know. I will need a new set of tires soon and I am just trying to decide what I can get away with.

My 275 Dunlop Direzzas don't bulge like others. I really like them a lot. Although I'm gonna give the Nitto NT05s a try next time around. http://www.discounttiredirect.com/direct/findTireDetail.do?pc=40526&counter=2&ar=35&rd=18&sw=false&cs=275

Luna.
05-05-09, 08:36 PM
Just know that running 275s on an 8.5" rim will often generate a much different feeling than running a 245 tire. There's a reason that they recommend 275s on a minimum 9" rim...

Personally, I can't stand tire "roll-over." This is my own bogus term and it refers to a situation whereby the tire feels like it "rolls" over the rim. I ran the 275 Goodyear GSD3s (IIRC) on the rear, which seemingly everyone loved, and I took those suckers off within 300 miles it was so awful feeling...

What felt so bad? Well, imagine going down the highway at, say, 75 mph and you change lanes quickly or, heck, let's be really basic---just gently toss the steering wheel in either direction to feel how "planted" the car feels...with 275s on the rear the answer for me was, "NOT AT ALL."

Holy sh*t--the a$$ of the car was as unstable as the economy with Bush in charge; it loved to roll back and forth, as it was easy to get the sidewall to roll over the rim. If you ever wanted to swing the a$$ of the car around, 275s on 8.5" rims would be the ticket...as a matter of fact, that's about the only advantage I felt there was, for it sure as heck wasn't handling...

Think that runflats, with a super-stiff sidewall, could solve that? Well, I tried that as well and the answer was a resounding NO. Better than the Goodyears? Heck yeah, but it still did it.

When I went to a 10" rim on the rear, "WOW!" was what I said and the difference was immediate as it was noticeable. The car drove (& currently drives) like its supposed to.

My recommendation would be to go 255s all the way around. No rubbing issues, no speedo issues, no rotation issues, nothing. And they work wonderfully on 8.5" rims.

I didn't like 265s, as too many people had rubbing issues in the front and I didn't like any staggered setup with 265s.

But 275s on 8.5" rims? Not for me ever again. I know well that many will speak about how great it is, and more power to them if they like it, but if you like a "stable" car, raise an eyebrow, for it's a FAR different feeling than I believe it otherwise should be.

whisler151
05-05-09, 09:34 PM
Just know that running 275s on an 8.5" rim will often generate a much different feeling than running a 245 tire. There's a reason that they recommend 275s on a minimum 9" rim...

Personally, I can't stand tire "roll-over." This is my own bogus term and it refers to a situation whereby the tire feels like it "rolls" over the rim. I ran the 275 Goodyear GSD3s (IIRC) on the rear, which seemingly everyone loved, and I took those suckers off within 300 miles it was so awful feeling...

What felt so bad? Well, imagine going down the highway at, say, 75 mph and you change lanes quickly or, heck, let's be really basic---just gently toss the steering wheel in either direction to feel how "planted" the car feels...with 275s on the rear the answer for me was, "NOT AT ALL."

Holy sh*t--the a$$ of the car was as unstable as the economy with Bush in charge; it loved to roll back and forth, as it was easy to get the sidewall to roll over the rim. If you ever wanted to swing the a$$ of the car around, 275s on 8.5" rims would be the ticket...as a matter of fact, that's about the only advantage I felt there was, for it sure as heck wasn't handling...

Think that runflats, with a super-stiff sidewall, could solve that? Well, I tried that as well and the answer was a resounding NO. Better than the Goodyears? Heck yeah, but it still did it.

When I went to a 10" rim on the rear, "WOW!" was what I said and the difference was immediate as it was noticeable. The car drove (& currently drives) like its supposed to.

My recommendation would be to go 255s all the way around. No rubbing issues, no speedo issues, no rotation issues, nothing. And they work wonderfully on 8.5" rims.

I didn't like 265s, as too many people had rubbing issues in the front and I didn't like any staggered setup with 265s.

But 275s on 8.5" rims? Not for me ever again. I know well that many will speak about how great it is, and more power to them if they like it, but if you like a "stable" car, raise an eyebrow, for it's a FAR different feeling than I believe it otherwise should be.

Wow, sorry your experience was so bad. Mine has been amazing! Your problem was that Goodyear's are too fat. My Dunlops have no "roll-over" and way better grip then the 245's I had before.

Glad you are on board with "change"...you can keep it.

DRKSIDE
05-05-09, 11:16 PM
Perhaps the reason for going with a wider tire got lost somewhere.

People plus size tires to get more hook. Not more handling. Now I am sure that everyone who went with a wider tire has WAY better g-meter readings than anyone else so don't get your panties in a wad. Whatever works for you is fine... your car. But the wider tire helps you get off the line. They won't handle the curves any better and they may feel a bit more loose depending how sensitive you are. A bulging sidewall is gonna give and sway more.

Great for a runway. Bad for mountain roads.

Luna.
05-06-09, 01:41 AM
Perhaps the reason for going with a wider tire got lost somewhere.

People plus size tires to get more hook. Not more handling. Now I am sure that everyone who went with a wider tire has WAY better g-meter readings than anyone else so don't get your panties in a wad. Whatever works for you is fine... your car. But the wider tire helps you get off the line. They won't handle the curves any better and they may feel a bit more loose depending how sensitive you are. A bulging sidewall is gonna give and sway more.

Great for a runway. Bad for mountain roads.

Or, perhaps, widen the rear rim to at least 9" (for 275s) and get the best of both. 275s are probably going to work much better on 9"+ rims, as they are designed to.


Wow, sorry your experience was so bad. Mine has been amazing! Your problem was that Goodyear's are too fat. My Dunlops have no "roll-over" and way better grip then the 245's I had before.

And the Bridgestone runflats...they were too wide as well? :hmm:



Glad you are on board with "change"...you can keep it.

If by change you mean, "anything but Bush," yeah I'll take it and thanks. Coming from a businessman, who's far more republican than democratic (although, I believe they should take the mere idea of "parties" and shove it up their arses...), this is a significant statement. That guy was, and is for that matter, a total moron of epic proportions.

However, as this is not a political forum, I'd be happy to discuss this with you in much more detail offline, if you desire.

bpitas
05-06-09, 10:47 AM
Most of the tire company websites list all the specs for each tire in great detail. You won't get that on TireRack or Discount Tire necessarily, but if you go to the Goodyear/BFG/etc sites you can find the real stats, which will help you figure out stuff like what the smallest rim the tires will fit, what the REAL rolling diameter is (so you can figure out speedo error), section tread width, etc.
I'm pretty sure when I got my 255s it was because that was the largest tire that BFG said could be mounted to our stock-width rim...

tweeter81
05-06-09, 12:14 PM
I love my 295/30/r19 Toyo R888s. They don't rub at all, and I am even lowered about 1" in the rear. I did have the fender lip rolled though, to provide a little more clearance, it is cheap insurance against rubbing. See my thread containing pix of my car "Midnight Rider" and you will see how the tires look. They poke out from the fender about 1/8", but no rubbing at all. The reason for that is the lower sidewall height (30 series as opposed to the stock 45 series) is about 1" shorter in overall diameter than stockers.

whisler151
05-06-09, 05:04 PM
And the Bridgestone runflats...they were too wide as well? :hmm:

I don't know what you are talking about?

Luna.
05-06-09, 05:35 PM
I don't know what you are talking about?

I was simply saying that I ran both 275 Goodyear GSD3s, as well as 275 Bridgestone runflats (is there a tire available that has a stiffer sidewall than a runflat??), and both "rolled" over the rim.

The only thing that solved that was widening the rims to the recommended width and poof, the problem was gone.

If your tires don't, consider yourself lucky, for most probably will have this issue. Hell, some shops won't even install 275s on 8.5" rims...