Thumping noise in rear passenger wheel

[CJ_Boxster]

The 51psi marked on ur tire is the Maximum tire pressure not to be exceeded, it's not a pressure recommendation by the tire manufactor, take down the pressure to around 36-37 psi and fronts to 32psi.

For instance, when the tire says 51psi Max. That means 51psi=very high, 52psi - Up=danger of tire failure. The max isn't a pressure recommendation, it's just a warning not to exceed that pressure.

As for ur thump, set ur tires to our recommendations then go for another drive and check for noises again and let us know if it's still there

[ArticBoxster]

Thanks for the tire pressure info, but resetting it did not help. I set it to the recommendation off the Firestone Website for this wheel and tire size (http://www.firestonecompleteautocare.com/tires/pressure.jsp) and the sound is still there. Maybe I did bust a cord but I'll wait until this weekend for the mechanic to check....It just strange that this suddenly happen. I was saving up to replace my Boxster body parts with fiberglass to lighten up the car...but thanks for the tire PSI education...very informative

[renzop]

Slow down a bit. Did you read what the factory specs for tire pressure are? Set your tires to those pressures not what Firestone says.

Also since you drove around with 51psi you may have broken a belt in one of the tires. Just go to a tire shop and tell them you suspect that one tire might have a broken belt. See what they say. Stay away from the dealer because as you said they are expensive.

[FTD]

Let us know what resolves it! I keep thinking drop links....

[tommy986]

I keep thinking there is a rabbit in the trunk.

[ArticBoxster]

Dealer said the looked at my suspension and could not see anything wrong. CV's were fine. Said it could be caused by flat spot in tire. Took their advice, bought whole new Michelin Pilot Sport A/S Plus and XL to replace my already new Kuhmo MX. Damn, it drives so soft but that rabbit is still there. Went to friends house cause his dad works with German cars...he practically went backwards around the world and was under the car afterwards for about half hour and said he can't figure it out. I'm giving this car to my son but don't want to give it to him like this. I also have a 2003 S with none of the issue. I'm thinking of taking it to Highline Alignment and hope they can figure this out!. My son will be turning sixteen in May and my '99 has 70k miles on it but looks factory new. I guess my fiberglass bodywork will be on my '03.