ferravette

Ok it's time to get the Z some new shoes.

It has come down to this:

1) Michelin PSC 265/35 ZR18 with PSC 345/30 ZR19. What concerns me here is that the backs are taller than stock and the fronts shorter. Will this affect ABS or the AH systems? Anyone here running this set up?

2) Michelin PSS 285/35 ZR18 with PSS 345/30 ZR19

or

3) Michelin PSS 285/35 ZR18 up front and PSC 345/30 ZR19 in rear.

The Z has approx 600 rear whp.
Looking for opinions on the above especially #3. What i'm basically looking for is a tire than can handle and at the same time hook up.

i know there is a price difference in the tires but let's not factor that here.

On my extra set of 18" rims i'm thinking of getting a set of BF goodrich 345/30 18 Drag radials.

Thanks in advance guys,

MTPZ06

#3 would be my first choice with trying to put 600hp to the ground. Then #2 would be second choice.

Stay away from #1...I have a friend who runs stock size 275's up front with 345's out back, and he gets occasional TC issues. 265's will be even shorter.

morris

I am on mpsc's now 285 up front 345 in the back and have had 0 issues

Jet Stream Blue Z06

I pick door #2, I just put them on my car and they are great. They stick like a son of a gun.

Good Luck

PatriotZ

I am with the above....door Number 2

stone150

are the PSS runflats?

Jet Stream Blue Z06

Non runflats

AzDave47

Don.t mix PSS and PSC's if you are interested in handling as the PSC's will stick much better than the PSS.

If you are at all concerned with driving in the rain, then 285/345 PSS, but with 600 rwhp, the PSS will probably need throttle roll-in and the PSC's will need to be warm.

You could also go 295/30-18 PSC in the front. While M recommends a 10" wide rim, my NT-05 in 295/35-18 fit on the rim fine (I do get front rub, but you wouldn't with the 30 series profile.

ferravette

Hey Guys,
i can't thank you enough for your input. Now i'm down to 2 choices: either the PSS or the PSC.

Let's not factor rain in the equation.

The PSS will keep a closer stock height front to rear. Stock height difference is about 1.1" and the PSS difference is 1.3".

The PSC height difference comes in at 2" with the 265's, 2.1" with the 285's and 2" with the 295's.

Having said this, i copmpletely forgot to mention in my op that at the present time i have the MT 345/35/18 in the rear with stockers up front and the height difference is about 1.9". I have had no problems with AH, so going w the PSC should not be a problem. I do have the DRM shock upgrade. What i do not like is the unsettled feeling the car has in a turn. This is probably because of the mismatch in tires and the use of a drag radial.

So here's my final question: the PSC are the stickier of the 2. The PSS will keep a lower front to rear height difference. Can the 7/10 height difference between these two sets of tires be a factor in stability and handling at speeds exceeding well over 100mph? If no then PSC, if yes Then the PSS.

Thank you again

AzDave47

I think many have run the 285 or 295 PSC with the 345 rear and not had codes. Taking rain out and the fact you've had MT drags in the back, I'd suggest 295/345 PSC's. You will mostly hook up and be nicely balanced in handling.

morris

As I mentioned I have been running 285 and 345 with no codes at all, I didnt even know that I could run 295's, that might be worth a look for a bit more steering grip on the front end.

ferravette

Ok looks like it's the PSC's.

AzDave, thanks for your input. Very informative and educational and also very appreciated.

Morris, thank you for sharing your actual experiences. I take it you would buy these again.
not sure if i will go 295's as i may want to lower the car a bit.

Once again thanks to all that chimed in.

morris

I am about to purchase my second set, these tires are amazing! My car is lowered some and is on coilovers with no rubbing on the 285's up front. I hadn't thought about rubbing on a lowered car with the 295's that's enough reason for me to stick with the 285's.

ferravette

I will order these tomorrow and hopefully get them in a day or 2. These tires paired with the DRM shocks should make me feel like a have a new car as compared to the 6 yr old stock runflats up front and MT DR in the rear that are on the car now.

morris

Here's a brief write up of my impressions with video http://forums.corvetteforum.com/c6-z...ith-video.html

C6Vette1

When you are referring to the TC issues, what actually happens?

ferravette

Great Video. Just love the way you start diappearing on the staightaways.

MTPZ06

He states the service TC/AH flashes from time to time at freeway speeds. Doesn't pull power though...that happens when the rears are smaller in diameter than stock and the TC assumes wheel spin.

C6Vette1

If the rears are smaller in diameter than stock and the TC assumes wheel spin, will running in Comp mode prevent the issue?

dbs1vette

In the event my vette sale does not GP through. What is a good street tire that raises the front slightly and lowers the rear a tad? Or at least the size.

Dang steep driveway anyway!