Liter of cola

Caught a few nails in my stock mpss... i wanted to replace with conti's but they arnt available. I wanna get away from run flats, so right now for stock rim im looking at the 28" tall 335/30/20 mpss or 26.3" tall 325/25/20, both NON runflat of course. I prefer the taller tire but will a 28" rub on stock suspension stock hight? Stock tire is 26.6"

C7/Z06 Man

I wouldn't take any gear ratio/performance away by using a taller tire. The 26.3" would be like running a stock height tire which has a little wear for even a 'slightly' better ratio.

However, I do like more ground clearance but 'most' on here prefer less.

Adam Silver05

I run a 345/30/19 which is 27.4 inches tall and I am lowered with LG Spindles (not bolts) and it will only rub if I hit a big bump with heavy passenger and full fuel and suspension set to touring. I don't think you will rub at stock height with 28"

Liter of cola

Anyone on here running 28" tires in the rear?

Bill Dearborn

Why are you afraid of the MPSS ZPs? They are damned good tires. They are top performing tires and the only downside is the slightly higher cost. The Conti's are a step down in performance. The MPSS is lower cost but then you have the disadvantage of running mixed front to rear ratio of tire diameters. That can affect how TC and Stability Control can react since the Brake Control Module thinks the rear tires are not turning appropriately with the fronts. That can affect when TC initiates and how hard stability control applies the brakes on one of the wheels when it is active. Then of course you have the possibility of tearing up the inner wheel well if the tire hits it when going over a bump. I run a .5 inch larger diameter rear Hoosier when I am on the track and I have two torn locations in my left rear inner wheel well where the tire hit it as I went over a bump. This is on a car at stock ride height.

Bill

Liter of cola

Im not a fan of runflats superstiff sidewall and what it does for launches... my car wheels hops all day its horrible, many times i'll get wheel hop at the top of 1st and shifting into 2nd aswell. Im planning to swap out the control arm bushings in the future for delrin which should help but these runflats got to go. If running slightly bigger a tire will cause rubbing than im not interested in doing it which is why i posted this. I may just get a used mpsszp off of ebay till these conti's are available, cuz i dont really wanna go down to a 325.

djnice

You can run 28" and they will just rub a little on full compression. I just took off slicks that are 27.8" and they rub the liner, but the liner is replaceable.

RRAYES1

345 25 20 nitto invo is the way to go and fits perfect on a 20x12 rim

RRAYES1

Even tho the Continental make a 285/30/19 and a 335/25/20 corvette stock size? You guys know that they are a shorter tire then the Michelin pilot super sport tire

AzDave47

Invo is a quiet cruising tire with good ride that is inexpensive and has good tread life. They are not really a performance tire for straight line or cornering grip.

gymdoc

Do you have first hand experience with the Invo? I've been seriously considering them and will have to pass if thats the case.

RRAYES1

I had a c6 z06 with the nitto invo pushing about 576 to the RWHP and if you set the tire pressure to about 28 psi they worked great

Ltrain925

i have 345/30/19 r888rs and getting my spindles installed next week this is good to know, I was worried about the rear rubbing but I can live with what you said.

AzDave47

No, but I follow tires on the forum very closely. I did have a set of Nitto NT-05s which are more agressive than the Invos. They had good grip and wore out in 7K miles including 4 track days, where they worked well. I replaced those with PSS non-ZPs and the PSS had much more grip. On a couple of local roundabouts the NT05s pulled .93 and .97G. The PSS pulled 1.12G on both and lasted well over 20K miles with several road course days.

I also have run R888s which I drive to the track and they grip like you would expect a DOT track tire to grip, well above street tires. I also have MT ET SS in 325/30-19. They have very good straight line grip, were OK driving to events in light rain, but start to get unstable at 140 and I wouldn't want to run them over 170.

RRAYES1

your running 19 on the back!

he wants 20s on the back!

mig1980

I would also be interested in this answer. Anyone else running 28" diameter tires in the rear?

gymdoc

I'm currently running 28 on 21 rim. (pirelli 355x25x21) Want to change back to 20 because I don't like the look of the car with 21's. sits too high but fills the fender gap well.

And yes, it rubs like a ****.. The tires have actually rubbed through the inner fenders in some sections but the liners can always be replaced.

mig1980

That's what I figured. Thank you for confirming. Does anyone know if there is another tire size that can be ran on a 21 x 12.5 wheel that would not rub?

AzDave47

I know and that is why I have advised him there are very few choices available for his 19/20 rims. 20" tires still do not make the Invos a performance tire.

ajrothm

Invos are terrible performance tires... For daily driving and putting miles on them, they are fine...but they have no grip either acceleration or lateral. They are sized small so a 345 is the equivalent to 325 or 335 of any other brand. Exactly the same thing goes for the Nitto Motivo line... They are sized very small, ride like a rail road car and have no traction.

No way would I run an Invo on anything that makes over 400 rwhp......(or 300 for that matter)