signes

^ Maybe a dumb question but I assume you put your stock wheels / Cup2s back on when not that the track. If so, any rubbing issues for street driving with lower tide heights?

TRAKCAR

signes

Thanks

GT345

Not sure how you got the 265/345 to work since mine was having crazy TC issues after one session.

Here is an update for you though...

My friend tried running 295/315 which is a 34 tire rev difference and had no issues.

I originally though this would cause over steer issue but he said it did not, and I think the 295 would provide better breaking since I find that with the 235s, by the second day my breaking is not as good since the tires are so much smaller up front and lose there grip even quicker because there is less overall tread.

Going to give it a shot next track day and see what happens, will prob also set my sway bar in the rear to soft to compensate for the smaller rear tire size.

TRAKCAR

I'm on my second set of 265 fronts and no problem at all with SC or TC.

We tried 295 front and the diameter is the same as the 235. I've ordered a set to verify for myself that it won't rub at Sebring but we have tried it on the road and it all clears.

Try that first, 295 / 345 I think will be better.

consolidated

sub'd

GT345

My friend already tried the 295/345 which honestly would be the best combo as far as traction, he had TC issues after the first session, but I am totally baffled how you got the 265/345 combo to work without TC issues for the following reasons.

If you go to tiresize.com and click on Hoosiers then R7 it will show you revs/mile for each tire.

Stock OEM SC2's are 37 revs/mile per difference and the Dunlap's are 40.

So for the Hoosiers that we already tried the Revs/Mile difference...
265/345 - 18 (TC Issues Really Bad)
295/345 - 21 (TC Issues Bad)
265/315 - 31 (TC Issue Slight)
235/345 - 37 (TC Issue None)
295/315 - 34 (TC Issue None)

So on that note 265/345 only being 18 difference was the worst combo I tired so how did you get them to work???

Also diameter on the 235/35/19 is 25.6 and on the 295/30/19 is 26.1 according to tiresize.com so about .5 difference, it would also make the stagger down to .7 with the 295/345 combo where stock is 1.4.

AlecG

Subscribed

GT345

How was the AX with the 295/345 setup, any TC issues?

Drifting

GT345

GT3 is a lot easier then RS since the RS has to go down one inch on the front, but 2 in the rear where the GT3 only goes down one inch on both front and rear.

So the GT3 guys are running 265/325 R7's Hoosiers and not having TC issues.

Do you have PCCB's or Steel?

RyanZ06

lots of valuable info in this thread thank you.

I have pm'd a few of you to see if there are any updates. I have run the 265/315 combo and ran into TC/ESC issues.