C7s

What do you think of these compared to stock tires & what tires do you use on track???

Thunder22

Were you missing the apex on a lot of turns on purpose? or is it just the camera angle ?

C7s

jimmbbo

Thanks for the info!
7 seconds is about 5.5% difference in lap times. Think the non ZP sidewalls and elevated air temp could contribute to a lot of that.. Did you notice the "g" reading in the turns compared to the OEM?
Interested to see if running in cooler temps reduces the difference.

C7s

^^^ It was 5 sec difference. I didn't have the g meter on the dash but my app showed similar g's although I don't think its very accurate. Hopefully I'll get to run again this fall with cooler temps. Stay tuned!

SilverGhost

Thank you for the comparison. It never ceases to amuse me that many believe that Corvette's recommended tire, produced in coordination with Michelin specifically for the C7's Z51 maximum performance; can be bettered by an individual choosing an off the shelf tire designed for everycar. The second smile comes when they shed the ZP''s citing more "comfort" from the non-run flat; but then agonize about how a tow truck operator will have to secure their aluminum-framed vette with standard steel chains and hooks and risk damaging all those "softer" aluminum bits underneath because they have a flat tire, and no spare. Familiarity breeds contempt, no words were truer spoken about the Z51's "stock" tires. Your comparison puts the Corvette/Michelin dedicated tire product back on top of the performance heap.

jdk541

xxaarraa

OK so the ZPs get you a few seconds on the track when you go to the track once, maybe twice a year, but I have to put up with the endless drone and harsh ride the other 363 days? No thanks. People don't get the 80/20. Enter Foosh and other ZP beleivers with their standard manifesto.

ZPs are harsh, not worth the NVH for most people.

Parcival

Foosh

LOL . . . you have me confused with someone else. I'm the one who owns an AS3+ set as well as the OE PSS set, have repeatedly said the PSS is overkill on the street, and not good for any kind of driving in lower temps. The PSS is the superior tire for track work.

However, I am a believer in ZP technology. I took delivery of a new C7 in Feb, and have already picked up 2 nails in 2 tires, with one having to be replaced. Sticky tire compounds are nail magnets, and they pick up sharp projectiles others would just roll over. ZPs kept me from getting stranded on both occasions.

joemessman

I have tested those A/S tires foosh has both ZP and Non ZP. There is no discernible difference in ride or noise. You guys that keep passing these old school ideas around better get into the 21st century. There are two kinds of advice. Bad advice and good advice.

911Hunter

Weather conditions and the fact that you were running with the A/C could made a big deal of difference on your lap times. By the way I really enjoyed seeing your 2 way camera video. I also switched to 4S on my Z51. I really like them. No regrets

Foosh

Correct!

fatsport

Why do people insist that ZP tires are better on the track? Slicks aren't ZP and they work fine on the track. Lou G is going to run Nurburgring with non ZP.
The stock runflats are better because Michelin and GM engineered a bigger contact patch with the same size tire. The ZP part of it is irrelevant.

The HACK

Foosh

You're comparing apples and oranges. Dedicated racing tires will always be better on a race track. This discussion was about the available street legal tires in C7 sizes. It just so happens that the best street legal tires for the C7 on a track are the ZP tires specifically engineered for the C7 (PSS and Sport Cup). It's not about ZP per se.

chronage

Thanks for the review. It's hard to say if there was an appreciable difference with all the conditions that changed between your two runs, but my non-professional anecdotal experience is that the Super Sports perform slightly better. I attribute it to the stiffer ZP sidewall as jimmbbo mentioned. I prefer the 4S on the street as it gives me all the performance I need but they are quieter and more comfortable than the SS. Good to have both sets on hand.

C7s

Glad you all liked the review. I have more track videos on my channel if you are interested.

BrunoTheMellow

This is exactly correct. I compared my friends 245/285 stock combo to my 255/295 non zp combo and the actual tread width is very close. Also, super sports in general have treads going very far into the sidewall, compared to other brands, these tires run much wider.

In general PSS are very fast on track for a summer tire. Nearly the fastest (other than the couple "street tires"). Yes it overheats fast but they can do some serious hero laps. That's why in events like one lap of America, many people use them and win.

orca1946

Thanx for the info to help me in tire choices.