Do the drop after the wheels, since you will need to get an alignment at that point, and then you can adjust the camber to the wheels to insure you wont rub. Not that you should anyway, unless you are way out of spec. But this is the best way to go about it I think

 

So I pulled the trigger on some PF01's/ 17x9 +60 all around. I was hoping to go with a 235/40 up front to be as safe as I can up front, but the tire selection seems to be almost non existent in that size. From a daily driving perspective does anyone see anything wrong with pairing a 235/45 with a 255/40 rear?

 

Pulled the trigger as well They arrived today!

 

Yes, the taller front (25.4") is bigger than the either a 225/255 (25") or OEM 215/245 (24.7"). It would raise the nose relative to the tail, hurting aerodynamics. It is doubtful you'd see any advantage over a 245/40 in fit or traction, and it would probably be worse.

With those rims it won't be a street class autocross car, and without modifications carefully within the rules, it wouldn't be a competitive or possibly legal STR car either.

You would be safest from a street fit and overall performance application with 245 square, with 245/255 being about the same. 255 square would be ok. It is used on lowered S2000s in STR and I've seen it on a street class S2000, squeezed on a 7" wide rim but it rubbed in the front. On a lot of the large front tire with unmodified fenders you will see many threads here on rubbing.

With modified fenders on lowered S2000s people have run as large as 315/30-18 (25.6" tall and wide). One of those ran a 335/30-18 in the rear, but that was a Hoosier A7 slick that is also 25.6" tall. The other 335/30-18s are 25.9". In addition to the fender and suspension modifications, those cars ran an OS Giken Salisbury rear because they had enough traction to lift the inside wheels in a turn. Just to show the limits...this thread isn't about getting the most.

More than size, is what tire model are you getting? For autocross there are only two: Bridgestone RE71r and BFG Rival S 1.5. For street use or track days there are more. The Michelin P4S would be my street choice. It doesn't come in a 255/40 so 245 square would be the choice.

 

What size did you end up going with, and what size tires as well?

 

Thanks for the quick reply. This is a 100% street car. No Track or Autocross. Just want to go with a nice safe street setup.

 

Then I'd go 245/40 square with the Michelin P4S: https://www.tirerack.com/tires/tires...um=44YR7PS4SXL

Note there is a $100 rebate that expires December 14.

 

Is 245/40 Square better than 245/255?

 

Performance/grip wise no. Only if you want to rotate tires front to back. I prefer the performance aspects on this car, so id do the 245/255.

 

im going with 235/255