GeneSch

What size tires are you guys running in 19/20 set ups.
I want to put the largest sizes that will fit. Really looking for a little more height. I don't want to lower the car so a little taller tire may fill the gaps better.

Tech

This is a common topic. How much power?

GeneSch

740 to the tires. I know the won’t hold the power for racing. I will have a set for that. I want these for DD and road trips.

Tech

If money is no object, R888R is what I’d try. They are grippy, taller, can be driven in light rain if you get caught, and don’t compromise lateral stability.

GeneSch

I’m going to have a drag set up for street n strip. I need something good for long drives, back roads and what ever els we may run into.

Tech

“Whatever else” is the variable. Michellin Cup 2s are what I ran for about a year on 19/20 combo with 650 rwhp. They were fine for spirited back road driving but weren’t that great for highway pulls.

ben410

Mickey Thompson ET Street SS is what I'll be running next. Currently on Michelin Pilot Sports and they can't grip that well. Currently putting down 560 rwhp.

Blk 08 C6

Ill be trying those r888r I believe 315 30zr 20s.

htvette

Toyo R888R has a 325/30/20 size which will be my next rear tire change.

Tech

Some info on Toyo tire sizes for those interested in them...

https://www.corvetteforum.com/forums...post1596275852

You have a few different combinations of tire sizes that will work.

Apocolipse

Those of you that are not getting grip with the mpss or cup2...what kind of pressure are you running and how cold is it outside?

Tech

32-34 psi.. all year in the midwest. Anywhere from 30* to 100*.

Apocolipse

Thank you for the reply. I know these tires like to be at ~34psi when hot for best grip and not more...perhaps it would be worth while trying to run 28 om the street.

hotrod03

I have ZR1 wheels 19 and20
345 rear
285 front
Wide body 427 vert

Vestor

You've got to be very careful on the height ratio between front and rear or you will throw off the traction control. Trust me I had this happen. I purchased a set of tires that had the wrong ratio because I wanted as big as I could get. I now have 19/20 and went with 285/335 which is the stock setting for ZR1. Works fine. I think the height difference front to back needs to be about .8-1.25 inches...so make sure you keep about in the range.

Apocolipse

Is it like the C5 where it will cut power thinking there is wheelspin and apply brakes?