: Widest Tires for 2005 CTS V with stock rims?



klyonker
01-09-13, 10:33 AM
Recently purchased a 2005 cts v with only 1,950 miles. 5,000 miles
later my tires are bald. Looking to go wide as possible on stock rims.

Thank you,

Klyonker

Andringa
01-09-13, 03:49 PM
Welcome, if your tires are bald with 7k on them it sounds like you will fit right in around here.

I can't tell you for sure, but 275/35/18 is about the widest that I usually see people posting about. I went with the stock 245/45/18 so that I can rotate front to back and try to get a bit more life out of a set of tires. I was planning on 255/45/18, but couldn't pass up a deal on the stock size.

If you want a bit more information; Here is a thread about how to search the forum.
http://www.cadillacforums.com/forums/2004-2007-cadillac-cts-v-general/217095-how-search-quickly-efficiently.html

thebigjimsho
01-09-13, 05:08 PM
Wider tires will give no added benefit in the turns on the stock wheel. Get wider wheels...

Andringa
01-09-13, 05:19 PM
Wider tires will give no added benefit in the turns on the stock wheel. Get wider wheels...

But Jim, it looks cool.

Good to see you visiting us. :)

PISNUOFF
01-09-13, 05:42 PM
275/40/18 rear tires are the same diameter as stock. Your speedo won't be off and you won't look like a tool with smaller diameter rear wheels. For normal driving you will be fine, on a road course you might feel a slight roll over at turn in. I notice some but I very rarely use my street tires on the track.

mberisha
01-09-13, 10:41 PM
275/35 on stock rims......


http://img003.picture2life.net/14268060/Rear_New_Tires_original_medium.jpg

PISNUOFF
01-10-13, 01:59 PM
245/45-18 = 677.7 mm diameter

275/40-18 = 677.2 mm diameter

275/35-18 = 649.7 mm diameter


275/35's are over an inch smaller in diameter. Your speedo will be off and you may run into stability control issues because of front to rear wheel speed differences. Some people have experienced it while others have not had an issue running different diameter tires.

OneFast V
01-10-13, 02:26 PM
i am running 275/45/18 rears and 245/45/18 fronts and no experienced any stability control issues. even on the track.

ls6v
01-10-13, 06:49 PM
Anyone ever ran a 265/40/18 front and 275/40/18 rear together? Seem to be the widest tires people on the forum suggest using for front and rear respectively on stock wheels without causing any rubbing/speedo issues from what i could find.

Skidmarcx
01-11-13, 10:16 AM
245/45 up front and 285/40 drag radials with no problems...

klyonker
01-15-13, 12:41 PM
I ended up going with 265/35's front and back.

I really appreciate the advice and comments. I'll have them installed before the weekend.

ls6v
01-15-13, 07:21 PM
I ended up going with 265/35's front and back.

I really appreciate the advice and comments. I'll have them installed before the weekend.

That's a difference in overall diameter from the stock 26.68" to 25.30". Seems like quite a bit?

http://www.1010tires.com/tiresizecalculator.asp?action=submit

klyonker
01-18-13, 10:26 AM
I noticed the car was lower and actually rubbed crossing the train tracks on my way home
from the tire shop last night after work. I drive 25 miles to work on a lonely, windy road in
WV. Everything felt great.

What is your conern? Should I have went with 40's vs. 35's?

JD03Cobra
01-18-13, 11:27 AM
245/45 up front and 285/40 drag radials with no problems...

Any pictures of this rear setup?

Skidmarcx
01-18-13, 01:35 PM
Any pictures of this rear setup?

Here's a couple I have loaded on my phone

http://i16.photobucket.com/albums/b32/bigmikeca/E6EB5706-BC3B-46A4-8817-62B9D90DB9B8-7661-0000022F5D636AAC.jpg

http://i16.photobucket.com/albums/b32/bigmikeca/169FB37C-421D-45A4-9442-2E4BA3CE237D-7661-0000022F557B8D8E.jpg

JD03Cobra
01-18-13, 02:42 PM
^^ Outstanding!

Skidmarcx
01-18-13, 05:22 PM
Thanks... 285 is too much for the wheel though... I can't get the entire tread patch down even with 18 psi... Ill probably go with 265 M/T next time

ls6v
01-19-13, 09:12 PM
I noticed the car was lower and actually rubbed crossing the train tracks on my way home
from the tire shop last night after work. I drive 25 miles to work on a lonely, windy road in
WV. Everything felt great.

What is your conern? Should I have went with 40's vs. 35's?

Typically if you put a tire 1.3" shorter than the original tire on a car it will look goofy, unless your car is lowered to compensate for the extra fender gap the shorter tire creates. But to each his own also..

klyonker
01-21-13, 03:31 PM
Yes, there is a visible amount more gap showing. I didn't bother me at all,
until you mentioned it. Now it kinda does. Maybe I will get a little more wear
out of these Falkens than I did with what the Manufacturer put on the car new.
If not, in 8-10k miles, I'll be looking for a new set. and consider going back up to 45's.

ls6v
01-21-13, 07:54 PM
Yes, there is a visible amount more gap showing. I didn't bother me at all,
until you mentioned it. Now it kinda does. Maybe I will get a little more wear
out of these Falkens than I did with what the Manufacturer put on the car new.
If not, in 8-10k miles, I'll be looking for a new set. and consider going back up to 45's.

Maybe you can throw those tires up on Craigslist or something and recoup most of the cost of the tires. I think you would have liked the 265/40's better as I've seen a few guys running that size with good results, but oh well...at least you have a V to put tires on!

PISNUOFF
01-22-13, 08:17 AM
I'm pretty sure we tried to tell you.

http://i1125.photobucket.com/albums/l586/bruckde/B11A21EE-656D-48C8-AAF1-7C873DF7473D-1689-000002DFD2DB6F7F.jpg

trukk
01-22-13, 12:46 PM
On lime my 5th set of rt-615's (current set is 615k). I get about 20k miles out of each set. Run 275/35's on all 4 corners. Installed eibach springs, to lower it. It is now really low, and looks great. Certainly scrapes on stuff now though.

-Chris

PJGross
01-22-13, 02:32 PM
On lime my 5th set of rt-615's (current set is 615k). I get about 20k miles out of each set. Run 275/35's on all 4 corners. Installed eibach springs, to lower it. It is now really low, and looks great. Certainly scrapes on stuff now though.

-Chris

Wierd, I tried mounting my 275 F1 GSD3s on front and hit control arm with wheel straight, I also hit with 275 Hankooks that were narrower than the F1s. So what tires were you using to accomplish this on stock rims? Do you run spacers?

I would love to run 275s all the way around to be able to rotate front to rear, but I didn't think it was possible on stock rims from my two attempts with different tires.

-PJ

EDIT: Ooops! Mine are the stock diameter 275/40/18s. I see what you did there: 1" shorter 275/35s, but I'd still like to know if you run a spacer or if anyone else runs 275/40s up front with stock rims and how its done!

klyonker
01-23-13, 10:23 AM
I didn't know Eibach made lowering springs for the 04-05 V??? I found them for the regular CTS.
I read some threads about issues using the HR lowering springs in that they dropped the car more
than specified.

jerkyboy
10-18-13, 12:19 PM
i am running 275/45/18 rears and 245/45/18 fronts and no experienced any stability control issues. even on the track.

Any chance you could post some pics of what your setup looks like?

DDS rollin a CTS
10-22-13, 11:08 AM
I have Bridgestone RE-11's in 275/40/18 all the way around. I had a set of 3mm spacers fabricated to get the tires to clear the front suspension. I've heard people try to say you don't gain anything from a wider tire but I can tell you from first hand experience the car is FAR more balanced with the 275's than with the same tire in 245 width that I had before. I use these tires for autocross and daily driving until it gets cold enough to put the snow tires on. One other thing I noticed is the wider tires reduce the occurance of wheel-hop, but when it does happen its a lot more severe.

jerkyboy
10-22-13, 01:05 PM
I have Bridgestone RE-11's in 275/40/18 all the way around. I had a set of 3mm spacers fabricated to get the tires to clear the front suspension. I've heard people try to say you don't gain anything from a wider tire but I can tell you from first hand experience the car is FAR more balanced with the 275's than with the same tire in 245 width that I had before. I use these tires for autocross and daily driving until it gets cold enough to put the snow tires on. One other thing I noticed is the wider tires reduce the occurance of wheel-hop, but when it does happen its a lot more severe.

any pics?

DDS rollin a CTS
10-22-13, 01:58 PM
any pics?

Not on hand and the car is in the shop. They're the same height at the stock tire size, they just stick out a little further due to the increased width plus the 3mm spacer.

Jman454
02-19-14, 06:17 PM
Has anyone ran 245 45 on the front and 265 45 on the rear if so what was the out come and if u have any pics can u please up load them

kyle242gt
02-19-14, 06:52 PM
187345

odla
02-21-14, 01:38 PM
Wider tires will give no added benefit in the turns on the stock wheel. Get wider wheels...

Just wondering why not?

RyRidesMotoX
02-21-14, 02:05 PM
Just wondering why not?

Tires will be pinched slightly, allowing for more sidewall flex because its not on an ideal width.

thebigjimsho
02-22-14, 02:57 PM
Tires will be pinched slightly, allowing for more sidewall flex because its not on an ideal width.

Agreed. Having properly matched tire/wheel width is important.

odla
02-23-14, 08:56 AM
Good to know. Thanks guys.