Tyre Pressure Help
Author
Discussion

toppers

Original Poster:

38 posts

250 months

Tuesday 29th November 2005
quotequote all
Hey all

Ok I just got a new set of rear Toyo's for my Tus S and the tyre dealer inflated them to 33 PSI. He also inflated the fronts to 32 PSI.

The car is going to be in the garage for the winter and I have 2 questions for all you kind people to help me on.

1. Should I lower the pressure while it is standing doing nothing in the garage for the winter.

2. What pressure should i run these tyres at when she comes out to play for every day driving with a mad blast at the weekends.

Thanks in advance.

Paul

NCE 61

2,457 posts

310 months

Tuesday 29th November 2005
quotequote all
I run mine at 24 PSI all round.

Dutchone

190 posts

261 months

Tuesday 29th November 2005
quotequote all
If your car is definitely staying in the garage for the winter you could up the pressures by 10 or 20% of the road pressures. Pushing the car on to a new bit of rubber now and again helps to stop getting a flat spot if your garage is long enough.

DON'T FORGET to deflate when you go out for the first time.

>> Edited by Dutchone on Tuesday 29th November 08:02

philip_cooke

5,837 posts

310 months

Tuesday 29th November 2005
quotequote all
Apart from the fact that when my dealer put new rear tyres on my Tuscan they pumped them up to 47!!!PSI, I now run them at around 24 PSI. But the question is.....How do I know 24 PSI is 24 PSI?? I have 2 pressure gauges, one reads 24 PSI, one reads 21 PSI when checking the same tyre. So which one is closer to the correct figure, or do I hedge my bets and go for a figure in between them both? Most (if not all) garage forecourts do not have calibrated tyre pumps, so how do I accurately check my pressures?

digga951

490 posts

304 months

Tuesday 29th November 2005
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I seem to remember a test that involved various preasure guages, and it was the small, metal type that was deemed the most accurate. Not sure what the correct name for it is - its about the thickness of a pencil, and when you hold it against the tyre valve, the air forces another piece of metal out of the end displaying the preasure.

philip_cooke

5,837 posts

310 months

Thursday 1st December 2005
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Thanks Digga, I have two of these types although one has a plastic middle 'bit'. The metal one is from the Tuscan tool kit whereas the plastic one was (probably) bought from Halfrauds at some point in the past. Does anyone have any experience of the new digital types?

tussie

70 posts

250 months

Thursday 1st December 2005
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Running them between 30-32psi makes sense: I was running at 24psi and bent 2 rims going through a London pothole On trackdays, running low pressure results in excessive wear of the shoulders.