Does anyone know of a thread that shows tire inflation rates? Looking for rates of non-OEM sizes. Thanks

 

inflation rate? Do you mean pressure? Actually, you follow the basic
pressures of stock regardless of size and then increase/decrease
depending on the climate, gross weight, and type of driving you do.

 

Just refer to your tire pressure recommendation plate on the driver's door jam.

For MINIs with 2 people use
30-33 psi front and rear

For MINIs with 4 people use
35-38 psi front and rear

What non-OEM size did you have in mind? These pressures will work on wheels that are from 15" to 20" no matter what the side profile. You may choose slightly higher psi for higher profile 60 series tires or similar.

 

The tire guy pumped up ours to 36lbs for two ppl. No wonder the ride seems to harsh now.

 

i use 38psi in the winter for myself...

 

Ah, but your winter is a bit different then ours.

 

215/40ZR/17 Thanks for the information. I didn't realize that you can keep SAME pressure in these as the OEM 17" w/runflats.

 

yes, in deed. My buddy out in Burbank says he's in mid- 80F's..
we got snow today.

 

Those Socal guys! We are in the 50's with rain today in S.F.

 

So for an MCS w/s lites I should be at 30 rear-33front psi? That seems low..

 

I think I read somewhere on mini2.com that with 215/40/17's you'll need to up the pressure to 40psi or something since the load rating of these tires is a little bit on the low side (83?).

Anybody else know for sure? I'm running 215/45/17's myself (non-runflat Pirelli P Zero Nero M/S) and I keep mine at 35 all year round (higher because I have some extra weight - 12" sub, a few layers of dynamat, false floor) and plus I like the better gas mileage.....

 

36 psi is suffcient!

Alex

 

I have 215/45/17 Toyo Proxes4 - what would be the best pressure - it is just me 99% of the time and NEVER anybody in back. I have them at 36 but that seems high.

 

When I purchased my 215/45/17 Goodyear F1 GS-D3's from Alex, he recommended 34 psi front and rear. I asked for a recommendation because the plackard in the door jamb says 38 on my '05 MCS. That seems unusually high to me. 34 psi seems appropriate.

 

It's possible you could run those tire pressures but just ask yourself how many people are there in your MINI?

If there are 1-2 people then choose:
32 psi for front and for the rear

If there are 3 to 4 people then choose:
36 psi for front and for the rear

There is a range that is acceptible based on which tires you have- just check the placard on the door jam- read the chart. You can run the same pressures on the front and the rear tires.

For 215/40-17 just use the normal psi range not 40 like Alex said.
And forget about loading up the MINI with four people and all their luggage for a camp out if you use those sized tires.

Rick-Anderson,
Since you have just one person then try 33 psi

emini,
34 psi is fine if you have 1-2 people only.

Test out the ride and see how it feels for you. Your tire pressure gauge might not be perfectly accurate so get into the right range and adjust.
You can run slightly higher to get less rolling resistance and better gas mileage but it will be a bit rougher. You'd still keep the pressure in the ranges as mentioned before.