Tire pressure question...

[mcoopers81]

Tomorrow I am swapping my summer performance tire to winter tires. Thing is, the summer tires are 17" runflats, while the winter ones are 16" runflats. Do I keep both of them to 38 psi like I do with my summer tires?

[caesar]

Quote: Originally Posted by mcoopers81 (original)

Tomorrow I am swapping my summer performance tire to winter tires. Thing is, the summer tires are 17" runflats, while the winter ones are 16" runflats. Do I keep both of them to 38 psi like I do with my summer tires?

38 psi seems high unless you have all the seats occupied. I run my MCS using 17" inch wheels and Dunlop runflats at 36 psi.

[IanT]

Isn't this info on the tyre pressure panel in the door frame? Like Caesar above I run 17" inch run flats at 36PSI - do US cars have different recommended pressures?

[caesar]

Quote: Originally Posted by IanT (original)

Isn't this info on the tyre pressure panel in the door frame? Like Caesar above I run 17" inch run flats at 36PSI - do US cars have different recommended pressures?

Yes it is on the panel but they use BAR not PSI......2.50 Bar= 36PSI.

When I bought the MCS I used to run them at 34 PSI all round, I had to replace the front tyres at 11k miles due to wear on the outer tread, centre was OK. Once the new tyres were fitted I increased the pressure to 36 and the car handled much better. The run flats need checking more frequently for some reason, I use a small compressor that runs off the ciggy lighter and check the pressures at 4 week intervals (if I remember!).

I have a R56 MCS, other Mini models may need different pressures. Also note that the recommended pressures vary depending on the number of occupants and maximum speed the car will be doing.

[witches70]

When i first picked my car up it running 32psi on runflats, and it was all over the place and it hated the bumps, now i run 36 psi on the rf's and its a lot better, although i dont think the rf's give to much grip anyway.