Goodyear 2nd Generation Runflats
Safety Car
Joined: Oct 2000
Posts: 4,949
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From: Monticello MN
Originally Posted by VETFVER
I say carry a tire repair kit, an air pump, and a AAA card for roadside service. I used a can of Fix-A-Flat once and it worked just fine. We only have one car with a spare and I doubt I would use it or at least make it my first choice.
D.
D.
Ed
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I've heard that the new runflat is a nice tire. Goodyear should be listening to the complaints on the old design and get busy making them in stock C5 sizes.
Team Owner
Joined: Sep 1999
Posts: 41,732
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From: Springfield MO
Originally Posted by robvuk
I'm no tire engineer but my guess is that the reason you don't see runflats on SUV's, minivans and daily runabouts is because those cars have 70 and 80 series tires on them. All the cars that have runflats are running 45, 40, 35 and 30 series. The sidewall is MUCH shorter and the stiffened sides can support the car. It's probably not possible to get the sidewalls stiff enough on a 225/70/16 to support the car without making it an inch thick. Those cars are built for ride and comfort. Low profile tires are not conducive to that. We tolerate the harsher ride for the benefit of performance. It lends itself to a runflat for many reasons on a sports car. e.g. we already have low profile tires, we already expect a harsher ride, we need the space in our smaller vehicles and we get an overall weight savings by not carrying a spare. None of these things is either necessary or tolerable in a grocery-getter/people-hauler. To make a long story short, I like the concept of a runflat but I wouldn't find it necessary on my SUV if it meant a harsher ride. I have nonrunflats on my C5 now because I found the GS-D3's to be superior in many ways but if I could get comparable performance from runflats, I'd have them. 
BTW, runflats will work on tire that are not 30/35/40 profiles. For years, aftermarket Armored cars, such as the Presidental Limos and the Secret Service's SUVs have had runflat tires as standard equipment. There are plenty of wealthy people all over the world that have their armored cars and SUV's equiped with runflats. Even the Hummer's for the military have runflat tires and they are not low profile tires.
the problem with the PAX runflats is that they canot be fitted to a conventional wheel. The wheel is off a special design, so they really have to be fitted on OEM applications, to keep the cost down.
Last edited by JoesC5; Feb 22, 2005 at 01:54 PM.
Safety Car
Joined: Oct 2000
Posts: 4,949
Likes: 10
From: Monticello MN
Originally Posted by JDs00PewterCoupe
I've heard that the new runflat is a nice tire. Goodyear should be listening to the complaints on the old design and get busy making them in stock C5 sizes.
No problem....Michelin was listening.
Ed
