285 vs 315
Burning Brakes
Joined: Sep 2011
Posts: 960
Likes: 40
So from what your saying, to run a 325/25ZR20 MPSS tire on a 12x20 wheel, you'd need a +85 offset and not the stock offset? So if a wheel says its max offset is +79, that wheel won't fit properly?
Also, on the stiffer suspension for lowered cars, would running in track mode all the time solve this problem?
Also, on the stiffer suspension for lowered cars, would running in track mode all the time solve this problem?
Track mode is just stiffer shocks. That just reduces the number of tire scrapes on a bump.
Take a look at the Pilot Sport Cup 2 in 315/30-19. That goes on a 19 x 11 79mm rear wheel.
My idea for a stick-it-out setup is the 315/30-18 Rival S on the front at 43mm to 46mm wheel offset and the 335/30-18 Rival S on the back at 60mm to 65mm offset. The spring rates must be 650/800 and the car must not be lowered
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Last edited by B Stead; Nov 5, 2015 at 07:31 PM.
Drifting
Joined: Oct 2013
Posts: 1,746
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From: Fort McMurray Alberta
2018 C7 of Year Finalist
I had contemplated the PSC2, but was advised against it for street driving because it doesn't grip very well unless it's warmed up good with a burnout or really aggressive driving. Hence why I was trying to stick with PSS but they don't make that in a 315r20. Would prefer to keep with a 19/20 set up instead of going 19/19. Wheel/tire set up is infinitely more complicated than I thought it was.
Burning Brakes
Joined: Sep 2011
Posts: 960
Likes: 40
For autocross, the Rival S is the tire.
Most likely, the Pilot Sport Cup 2 just lose sharpness at 4000 to 6000 miles
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Last edited by B Stead; Nov 5, 2015 at 08:04 PM.
Drifting
Joined: Oct 2013
Posts: 1,746
Likes: 1,300
From: Fort McMurray Alberta
2018 C7 of Year Finalist
Alright then. Part of the problem is I live in a very isolated city in Canada haha. It's 500+ kms one way to the nearest track. I go there about 4 times a year, but the highway driving and primarily street use lead me away from PSC2's and R888's. That's why I was trying to keep the MPSS but apparently 325 is too wide without rubbing, 305 is too skinny for me, and they don't make a 315 in that size.
