BT: Tire pressure
#1
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Ive been setting my B5 S4 18" Michelin Pilots at 38F 37R cold. All four tires are wearing noticibly more in the center, indicating over-inflation. I really didnt think my setting were too high, any lower and the car doesnt feel right to me. Any advise? My previous set of Pilots wore the same way.
#2
AudiWorld Expert
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and the reason it does not feel right is probably the sidewalls are not stiff enough for you. I run 40/39 on my 225/45/17s and have the same high wear in the center. I know I am running them too high - my next set of tires will be set lower.
#5
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Reggie is probably right. If the centers of the tires are wearing more than the shoulders, lower your pressures.
This assumes, of course, you have a proper alignment. If you don't, start by fixing that, then adjust air pressure from there.
This assumes, of course, you have a proper alignment. If you don't, start by fixing that, then adjust air pressure from there.
#6
AudiWorld Super User
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...more like the 'softest' in the industry.
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#9
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34 feels a lot better, but I'm noticing in a couple weeks more shoulder wear. Oh well, I like the softer ride anyway... dunno if that helps at all.
#10
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BTW, drove to Cape Cod again and took some pressure readings. 38 cold = 43 hot after 100 miles on the highway 80-85 mph. Its my highway drives at high speed (probably in the summer even more so where Im back and forth to the Cape) where I need to bring my pressures down. Car rides noticably harder after a few hours in the car.