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Input on next set of track tires

55
70
Exp. Type
HPDE
Exp. Level
Under 3 Years
Nashville TN
I’ve seen a picture of a GT350 with 325-25 square. So as long as there is clearance for the 30’s, I guess it should work
Interesting, don't think I've seen that profile. I do know, secondhand, of folks running 325/30/r19, so I'm giving it a go. I'll pick them up Saturday and run them at Barber the following weekend, so I can let you all know how it works out.
 
55
70
Exp. Type
HPDE
Exp. Level
Under 3 Years
Nashville TN
I think @boardkat mentioned he uses 335 square. Fairly certain he has different fenders though
I found his build thread and here's his summary on running 18x13 wheels up front with 335 tires:

Front
1.) Offset struts
2.) "Right-sized" piston or enlarged strut hole
3.) Camber plates
4.) More than -3.5 camber
5.) 700lbs+ 2.25ID 5" springs
6.) A BIG-ASS adapter (and not having an aversion to running one)
7.) Quik-Latch bumper attachment points
8.) Rolled/Pulled/Spaced fenders
9.) Fender liners removed
10.) Creative placement of various parts/lines
11.) Ability to stomach 2mm of inboard strut clearance and NO fender clearance with occasional rubbing/self-clearancing

Certainly more than I have done or plan to do on mine. Hopefully not necessary for 19x11.5 with 325s.
 
36
22
Exp. Type
W2W Racing
Exp. Level
3-5 Years
Phoenix
Interesting, don't think I've seen that profile. I do know, secondhand, of folks running 325/30/r19, so I'm giving it a go. I'll pick them up Saturday and run them at Barber the following weekend, so I can let you all know how it works out.
I'm having issues with sidewall wear, I also am running square 11.5's. Seems like the 3R/305's are too stretched on that wide of a rim, my were marks disappear after one session. How'd the 325's do??? I'm also probably going to run all the SPL parts up front with the Vorshlag so I can get at least 3*
 
I'm having issues with sidewall wear, I also am running square 11.5's. Seems like the 3R/305's are too stretched on that wide of a rim, my were marks disappear after one session. How'd the 325's do??? I'm also probably going to run all the SPL parts up front with the Vorshlag so I can get at least 3*

Tire stretch makes the sidewalls stiffer, its not the stretch that is making them wear on the edges. A lack of camber or too low pressures or both are your culprits. Per above you are less than 3*, which for a tire as grippy as a 3R is way not enough for most any setup on our cars.
 
55
70
Exp. Type
HPDE
Exp. Level
Under 3 Years
Nashville TN
I ran the 325s at Barber and they worked great. I did run a 3mm spacer on the rear as the tire was quite close to the parking brake bracket and the top shock mount so I wanted a little extra clearance. I had no rubbing issues and had great grip.
 
36
22
Exp. Type
W2W Racing
Exp. Level
3-5 Years
Phoenix
Tire stretch makes the sidewalls stiffer, its not the stretch that is making them wear on the edges. A lack of camber or too low pressures or both are your culprits. Per above you are less than 3*, which for a tire as grippy as a 3R is way not enough for most any setup on our cars.
Tru, but I can't get anymore camber with current setup, less than 1/2" away from struts, need to push the whole wheel assembly out a bit more, running 35mm spacers already
 

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