What Size MPSC?

[North Coast Cab]

I've decided to go with a set of Michelin Pilot Sport Cup tires and I'm looking for some sizing advice. I have heard they seem to be a little undersized. I have 7.5x17 and 8.5x17 wheels. Are 225/45's and 245/40's correct or should I move up a little, say to 255/40's? Anyone with real world MPSC experience would be greatly appeciated.

John

[chrisp]

I have 8's and 9's x 17. I chose to go with the 245.

Why?

-My car is relatively low horsepower (stock SC motor) and I felt the 20mm stagger is acceptable.
-MPSC's tend to prefer higher temps. I wanted to run them hotter than cooler.
-The less tire you can run the better. It has aero and unsprung weight benefits.

FYI, I have never run the 255 so I am not able to compare them back to back.

[PeteBrown]

Which MPSC would be better on fat Carrera? I have 7&9s that I run 225/45 and 245/45 SO-3s but the rears are bald. I have the stock 6&7s. I was planning to move up Toyo-RA1s in 225/50 and 245/45 on the 7&9s but if the MPSC like heat would a set of 205/55 and 225/50 on the 6&7s be a similar performance alternative? The advantage would be to keep my 7&9s for the road and have a set of track wheels.

Sorry to steal your thread John.

[Bill Verburg]

Originally posted by North Coast Cab
I've decided to go with a set of Michelin Pilot Sport Cup tires and I'm looking for some sizing advice. I have heard they seem to be a little undersized. I have 7.5x17 and 8.5x17 wheels. Are 225/45's and 245/40's correct or should I move up a little, say to 255/40's? Anyone with real world MPSC experience would be greatly appeciated.

John

In those sizes they actually run on the wide side.

Considering the narrowness of the wheels those are good sizes.

If you go to a 255/40, the wheel will be on the narrow side and the gearing will be affected. Both adversely

[Bill Verburg]

Originally posted by PeteBrown
Which MPSC would be better on fat Carrera? I have 7&9s that I run 225/45 and 245/45 SO-3s but the rears are bald. I have the stock 6&7s. I was planning to move up Toyo-RA1s in 225/50 and 245/45 on the 7&9s but if the MPSC like heat would a set of 205/55 and 225/50 on the 6&7s be a similar performance alternative? The advantage would be to keep my 7&9s for the road and have a set of track wheels.

Sorry to steal your thread John.

I would rather have the performance benefit of the 7 & 9 on the track than the looks on the street.

MPSC certainly do want heat, either the MPSC or RA-1 can be used as a dual purpose tire.

If you do more DE than street then either would be a good choice.

If only occasional DEs why not something like the Advan Neovas or maybe PS2s

using R rubber on narrow wheels is counterproductive.