The "Will it fit?" thread

[AntiVenom]

Originally Posted by Rusty

I'm running 275/35-19 PSS which is 26.6" and 345/30-19 PSS which is 27.2". With no issues.

yea, you are teetering right on the edge which is what even gives me hope, haha.

i have this hairbrained scheme about going 19"FR and 20"rear. I also want to run some serious rubber, but so far the closest i can come in terms of diameter, and keeping sidewall more or less the same, is 3.1% difference FR>RR (285/30r19 FR | 335/25r20 RR). my preferred tire selection would actually put it at about a 3.4% difference (285/30r19 FR | 345/25r20 RR), which i expect would definitely cause weirdness. obviously a wonky traction control system makes the idea a no-go.

edit: there are other tire choices that come closer, but i was hoping to run some 325+ on the RR. however, i like the sidewalls/diameter sizes of some of the narrower options.

[jchammond]

Originally Posted by AntiVenom

yea, you are teetering right on the edge which is what even gives me hope, haha.

i have this hairbrained scheme about going 19"FR and 20"rear. I also want to run some serious rubber, but so far the closest i can come in terms of diameter, and keeping sidewall more or less the same, is 3.1% difference FR>RR (285/30r19 FR | 335/25r20 RR). my preferred tire selection would actually put it at about a 3.4% difference (285/30r19 FR | 345/25r20 RR), which i expect would definitely cause weirdness. obviously a wonky traction control system makes the idea a no-go.

edit: there are other tire choices that come closer, but i was hoping to run some 325+ on the RR. however, i like the sidewalls/diameter sizes of some of the narrower options.

sound's like you're after the ZR1 wheel set up,,,could be wrong-but i was thinking that 335/25/20 only came in run-flats.
Factory Diameter setup's are 325/30/19R & 275/35/19F ,The Michelin PSS tires are probably some of the widest tread ones.
"Rusty" has that Bad-Azz look!!!
i was thinking Pro-Street look 345/30/19R & 255/40/19F MPSS on 8.5 & 12" Forgelines.
or 295/35/19F on 10"wide wheel.
PS...."Rusty" also has unlimited funds!

[AntiVenom]

Originally Posted by jchammond

sound's like you're after the ZR1 wheel set up,,,could be wrong-but i was thinking that 335/25/20 only came in run-flats.
Factory Diameter setup's are 325/30/19R & 275/35/19F ,The Michelin PSS tires are probably some of the widest tread ones.
"Rusty" has that Bad-Azz look!!!
i was thinking Pro-Street look 345/30/19R & 255/40/19F MPSS on 8.5 & 12" Forgelines.
or 295/35/19F on 10"wide wheel.
PS...."Rusty" also has unlimited funds!

You are spot on. the 285/30r19 FR and 335/25r20 RR setup is with PSS ZPs (run flats) same as the C7 vettes. I am not keen on the idea of run flats, but you can't argue with the handling success of the vettes.

Last night after spending some time with tire calculators and searching TireRack I also came across an alternative 275/35r19 FR | 305/30r20 on regular PSSs that would work better (2.2% diff FR>RR) and also fill the fender wells more (i.e. larger diameter than the wider ZPs mentioned). This option wouldn't create any problems with the TCS, but I lose width in the rear. It also has the advantage of being the same width as RS3 tires I will run as track tires.

So the 275/305 setup is currently my top choice if i decide to go 19/20. I expect the narrower rear tire won't have a major impact on traction. So, the only thing I lose is my spot in the "370z Wide Tire Hall of Fame", next to Rusty.