daje58@hotmail.com

Anyone running Michelin Pilot Super Sports
285/35ZR19
(103Y) XL

345/30ZR20
(106Y) SL


Any problems with running these? I know they dont look as nice or perform as well, but tired of worrying about front spoiler dragging.

thanks in advance for feedback

AzDave47

The fronts are a little over 1/2" diameter taller, the rears well over an inch taller than stock. If you just cruise on the highway, they should be OK. If you do any performance driving, they will rub, especially in the back.

If your problem is ground clearance, the stock suspension has ride height adjustable bolts that can raise as well as lower the car. Why not use those and then re-align the car?

MK4sup_isF

My car on Cup 2 in those specs. It runs fine. Fender liners in the rear rubs over large bumps. I'm 3/4" lower than stock, stock bolts. Those spots will be all worn though eventually, not s big deal to me though. I love the thicker sidewall and smoother ride. Handling hasn't changed.

atterbud

I put 285/35 19 and 335/30 20 non-run flat MPSS on my OEM sized Forgeline GA1R's last week. I have not altered the ride height at all on the car since I got it a couple of months ago. I get a little rubbing in the rear over bigger compressions but nothing when pushing or cornering hard. I have the DSC Sport controller on order from Katech for the Mag shocks which should enable me to dial out any rubbing at all.

I do notice the taller gearing that the larger diameter gives, but with all the power and torque this car has, it is not a problem at all for street driving. Judging by the speed radar I pass every day, my speedometer is reading 2 mph low rather than 1-2 mph high with the MPSS ZP run-flats. When I come to track next year when I am more used to the car and have been to Ron Fellows, I'll be adding track wheels in 18" sizes so I'll be closer to OEM diameters where it matters.

Overall I am very happy with the change and although it could just be the placebo effect (or me just wanting to justify the expense of the Forgelines!), I prefer the feel of the car when pushing hard on the twisty CT backroads. If it's good enough for the GT3, it's good enough for me!

3 Z06ZR1

I use the Michelin SS tire on my 2015 Z06 with great success. Only I wanted to stay with
or close to the stock height since they don't come in 335 rear or 285 front in the stock profile.
So I buy 325 rear and 275 front in the stock profile only .2 tenths shorter which is really not even noticed GM should have used this size IMO!

jriley9922

front should be ok at about 1" taller... but those rears are going to be 1.5" taller and .5" wider. I think you'll be asking for trouble... stick with 335 30 20 rear if it's a michelin.

lots of people running 345 width rears, but mostly in toyo or nitto which run narrow.