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timmmay: A little story...
After the two new tyres were fitted to the rear of the car by Tony's Jervois Quay, Wellington, things felt a bit funny. The back felt like when I was steering around corners it was sliding, but the tyres were sticking to the road fine. It was like the rear of the car took time to catch up with where I pointed it. Like the tyres were very tall and flexing.
People told me to check the tyre pressure, but I said "Nah, I've been going to Tony's for 15 years or so, they wouldn't make a basic mistake like that". I did eventually check the tyre pressure and found that instead of the recommended 32psi they were around 28! The ride immediately went back to normal, it's amazing the difference that 4psi made, it was like night and day. I imagine that there's been a little wear and hopefully no damage.
I called Tony's today and spoke with the branch manager. I told him (very politely) I wasn't very impressed, that it was a safety issue. He said "sorry sir it must be a faulty tyre gauge". That was it. I thanked him and hung up.
So Tony's either
1) Both tyres were fitted incorrectly and are leaking (unlikely as they wouldn't go down at the same rate, and they felt the same after a week as they initially did)
2) Tony's has a faulty tyre pressure gauge
3) Tony's has a staff member incapable of doing the basics of their job.
I'm going to raise this with their head office as either scenario is unacceptable.
KiwiNZ: Or a simple human error, like you and I they are just human. Also the tyre pressures recommended are not usually a single figure but a range taking into account loading.
My father(was motor engineer) always told me to check the pressures a couple of days after new tyres are fitted as the time of day fitted can affect pressures.
timmmay:KiwiNZ: Or a simple human error, like you and I they are just human. Also the tyre pressures recommended are not usually a single figure but a range taking into account loading.
My father(was motor engineer)
told me to check the pressures a couple of days after new tyres are fitted as the time of day fitted can affect pressures.
Sure, human error is most likely. It's a fairly simple thing to do properly, and it could potentially cause an accident.
Bung:timmmay: Sure, human error is most likely. It's a fairly simple thing to do properly, and it could potentially cause an accident.
I don't have a Corolla but find it hard to believe that driven sensibly 4psi would make that much difference. New tyres do need to wear off the film of "newness". Many a motorcyclist has slid on his Rs giving new tyres too much gas.
Tyre pressure changes at about 1psi per 10 degree F.
Jase2985: i struggle to believe that at all. something else is going on. or you are absolutely thrashing your car round corners, pushing the tyres to the limit.
from factory the tyre pressure would have been 28-32 psi of that size tyre.
so really i have no idea?
i run my tyres at 36psi
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