It would've been very interesting to have had one C5 on hand equipped with the Goodyear EMTs, for a direct comparison. At the modest speeds we were limited to, the effects of the deflated run-flat were relatively unnoticeable, except for a hideous grinding sort of noise from the airless tire in lefthand turns (when weight was transferred onto the deflated tire), and gross understeer in the left turn gates of the chicane. The routine here was to go out and run five or so circuits-at a very modest 55 mph maximum, come in and observe while a Firestone technician pulled the valve from the right front tire to completely deflate it, then go out and drive the course several more times. An excellent tire for the price and while they dont offer the security of runflats, just prepare yourself in case of a puncture (portable air compressor, plug kit, perhaps a small jack and a cell phone/emergency road service). Here's what your performance tires are made of. A fairly large (roughly 3/4-mile) loop segment of the Firebird track was set aside for the Vette tests, with a slalom (eight cones, spaced 100 feet apart down the center of a straight stretch) to be woven through, chicanes for back and forth, hard right and hard left turns, plus right- and lefthand sweepers. PART 1: TIRE CONSTRUCTION Tires are highly complex, multi-layer constructions that meld specialized rubber compounds with reinforcing materials. The half-dozen 2000 C5 convertibles were all base-suspension automatics. Are Modern Runflat Tires Finally Good Normal, RFT and SEAL Tires.
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