Re: What tires should I get for my Z06?
I got Michelin Pilot Super Sports (non-runflat) on the car in March 2013 (285mm front & 345mm rear on stock size Spyder wheels), and absolute love them. I was skeptical that fronts would be too wide/tall, as the front 275mm PS2s barely allowed clearance of the tip of my pinky to fit. However, the MPSSs fit better than the PS2s and original GYF1s on the stock rims.
Bought car with 8000 miles with GYF1s on car. Tires were dangerous in the the rain, provided only 1/2 the needed traction in the dry (could spin the tires to redline in 1st gear if full power was applied [feathered or not] at any speed) and were dangerously twitchy and unstable going thru corners with surfaces that were not perfectly flat or giving it any power at all exiting corners. Very Unsat.
At 11,000 miles, I gave up and tossed GYF1s with almost 5/32nds tread left on them for Michelin PS2 runflats. PS2s were much improved over GYF1s for all conditions, but were on a quantum level higher for wet traction. I was surprised that the PS2s on the rear were way too narrow for the stock rim (over 1 inch LESS tread than the GYF1s, but still performed sooo much better). I also noted that the front PS2s were really too BIG on the front. I sustained a flat from a razor blade on a rear tire 8000 miles into their wear, but the dealer was able to patch. However, I was surprised that the runflats were later discovered (on the next tire change) to have evidence of interior tire damage after driving only 20 miles on flat at less than 40 mph. So not sure just how good the "runflat" mode is, if you plan on running the car hard after sustaining a flat, AFTER being repaired.
At 20,000 miles of wear, I replaced the PS2s with the MPSS (not runflat) as noted above. The PS2s lasted twice as long as the GYF1s performance per performance measure, but they then reached the inability to hold traction in 1st gear similar to the GYF1s, but not near as bad. The MPSSs were $1500 shipped to door versus increased PS2 price of $2200 shipped to door. So I decided to add a compressor and slime kit to rear hatch compartment and add me to my wife's AAA plus just in case. The MPSS tires perform better than the PS2s with the more complaint sidewall and wider contact patch and are still great in hard rain. While I have not tracked on a road-course, the tire seems more stable in every way. I hope to do a test & tune run at the drag strip just as a baseline, just for grins, but expect very reasonable times for a non-drag racer.
If you do not take long frequent trips in your C6Z, the MPSS (not runflat) is a fantastic tire of good value. Also note that I tried the MPSS on my wife's 2010 Maxima SV first and this tire made that car perform at a whole higher level, while still being a comfortable daily ride. This explains how the Ferrari 458 can perform like it does no relatively NARROW tires.
Also MPSS is rated at 300 treadwear (vs PS2s 220), due to dual compound tech (hard compound center & softer at edges), but time will tell what wear I really get out of it. If makes 20K, I will be more than happy at that price and performance level.
Last edited by I CORNER; 07-07-2013 at 05:57 PM.