Advice on track tire size

RN SHARK · 08-05-2018, 03:05 AM

I know there are many threads devoted to the topic of track tires and wheel setups, but I specifically have a question regarding aspect ratio and ride height.
So I decided to get track-only wheels and tires and am going with the Enkei NT03+m in a 10.5x18 +30 on all four corners and Nitto NT01 tires.
My question is 275/35 or 275/40? The 275/35 diameter is 25.55" vs. the 275/40 is 26.65". I don't want to bottom out all over. Does it matter very much?
As for my car, I am lowered only on Swifts at the moment with SPL front A-arms and rear camber arms. Front camber is -2.6, rear is -2.1. Currently, I have had some inner fender liner rub with the stock sport wheels on 245 RE-11's at some tracks. Of note, at ZDayZ, some people mentioned my drop on Swifts looks a little more than others. I don't know if that is true, as I only know my car.
So, don't want to bottom out. Don't want to rub. 275/40 are $300/tire and the 275/35 are $259/tire.
What do you all think would be best?

08-05-2018, 03:05 AM	#1 (permalink)
RN SHARK Track Member Join Date: Jun 2011 Location: Delafield, WI Age: 44 Posts: 618 Drives: 09 370Z, 14 SRT GC Rep Power: 35	Advice on track tire size I know there are many threads devoted to the topic of track tires and wheel setups, but I specifically have a question regarding aspect ratio and ride height. So I decided to get track-only wheels and tires and am going with the Enkei NT03+m in a 10.5x18 +30 on all four corners and Nitto NT01 tires. My question is 275/35 or 275/40? The 275/35 diameter is 25.55" vs. the 275/40 is 26.65". I don't want to bottom out all over. Does it matter very much? As for my car, I am lowered only on Swifts at the moment with SPL front A-arms and rear camber arms. Front camber is -2.6, rear is -2.1. Currently, I have had some inner fender liner rub with the stock sport wheels on 245 RE-11's at some tracks. Of note, at ZDayZ, some people mentioned my drop on Swifts looks a little more than others. I don't know if that is true, as I only know my car. So, don't want to bottom out. Don't want to rub. 275/40 are $300/tire and the 275/35 are $259/tire. What do you all think would be best? __________________ ___________ '09 6sp/Z1/PowerTrix/SPL/Swift/SRP/Whiteline/F.I.LTH&CBE/UpRev by Seb/CJM/Stillen/Ings+1/RJM/TrackSpec/Sparco/Motul/Wavetrac/Coolerworx/Verus/CraftSquare '14 SRT Grand Cherokee; '08 TL Type-S

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