A8 / S8 (D2 Platform) Discussion Discussion forum for the D2 Audi A8 and S8 produced from 1994-2002

How much age/mile variance still OK between pairs of tires?

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Old Feb 13, 2007 | 08:56 AM
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Default How much age/mile variance still OK between pairs of tires?

The engine of my dad's beloved 1998 Buick Riviera suddenly caught fire yesterday. IIRC, mechanic's guess is something like a "backfire into the air filter." Total loss.

Anyway... as we were discussing it, Dad mentioned that the tires (Goodyear Eagle, same size as mine) were a few months old (maybe 3-6?). The fronts melted, but the backs are perfect.

My existing tires are definitely showing their years & I was thinking of getting a new pair to go with his two (which is a lot cheaper than a complete set of four Conti's).

How many miles difference before they cause trouble?

Newer ones on front or back?
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Old Feb 13, 2007 | 09:45 AM
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Default Tread matters more than age/miles.

ie: smoky burnouts for 100 miles would loose more tread than granny driving for 10,000 miles

The quote "I live my life a quarter mile at a time" comes readily to mind ...

And there is a thread down a bit discussing where to put new pairs of tires, but tire rack suggests new on back.
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Old Feb 13, 2007 | 11:12 AM
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Default Tire rollout has to be pretty close. Check the specs and tread depth, also...

there was a problem with the plastic intake manifolds on those 3.8l motors. Backfires could break them and cause a fire.
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Old Feb 13, 2007 | 11:23 AM
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Thanks for the manifold note. Do you have more info? Ins. co. told Dad fire rare.
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Old Feb 13, 2007 | 12:15 PM
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Google it. '3.8 plastic manifold fire' or suchlike.
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Old Feb 13, 2007 | 03:55 PM
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Did... Thanks... It was for the '96, but at least it is background info that it is possible.
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Old Feb 13, 2007 | 04:00 PM
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Default May be a moot point. Size right, but they're 97T Michelins. Might have all 4, though...

Went and looked at the car. Yikes! Apparently the fire shot up into the air when the fire department was putting it out.

Anyway... The front tires don't look like they were damaged. They're still holding air just fine and the paint in that area seems good. I'm thinking that since heat rises, they could be OK?

The big downside is that the new tires they put on were 97T Michelin HydroEdge. (Dad likes his cars to drive "like an American-made couch.")

<i>NOTE: I'd mainly be getting these to tide me over until I get a new set of Conti's.</i>
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