Tyre Pressure

[minimike7]

Hi I have the 17" bullets with Pirelli runflats on the front and the standard tyres on the back, 205/45/r17

what do you all do for tyre pressure, as I seem to go through tyres a bit quick and bet its because of tyre pressure,

the little plate on the door says about 35psi front and rear, I never known a car to have the same front and rear, but then the cooper s is very balanced.

What do you all put in yours, ideally people with the 17" alloys?

[Bilbo Baggins]

The performance of the MINI may be balanced but the car is not. It carries 61% of it's weight on the front wheels and only 39% on the rear. I carry about 4 - 5 psi more pressure on the fronts than the rears to help maintain even tread wear.

To determine this I purchased a tread depth gauge and measure 3 places across the width of the tread, once on each shoulder and once in the middle. If there is less tread in the middle I decrease the pressure a pound or so. If the tread is deeper in the middle then I increase the pressure a pound or so. I try to check every 1,500 - 2,000 miles. As little as 1/64"(.4mm) is detectable with a tread depth gauge.

Mixing brands of tyres on a vehicle can be risky as different manufacturers tires can handle very differently and make your MINI behave in unexpected ways when pushed to extremes.

[minimike7]

Quote:

Mixing brands of tyres on a vehicle can be risky as different manufacturers tires can handle very differently and make your MINI behave in unexpected ways when pushed to extremes.

I appreciate that, and I never normally would, I am changeing the rear Dunlops for Perelli when they go, sure it wont be long now as i seem to go through tyres petrol and miles like there going out of fashion.

[minigolf]

In answer to your question ... 38-40psi all round.

And, yes, coventional tyres on one axle, and runflats on the other is a recipe for disaster!

Put the RFs on the back and do a few hand brakies before you buy some new tyres...

[minimike7]

Both Brands are runflats...sorry if that wasnt made clear, i would be that silly

[hyprblu]

I found that Pirelli tyres did not last as long as Bridgestone or Dunlop...........I currently have Dunlop for street and Bridgestone for track.....