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tyre pressure
Posted: 14 Sep 2009, 06:06
by umgum
i have 15 inch alloys on my van what tyre pressure should they be at
Re: tyre pressure
Posted: 14 Sep 2009, 06:12
by andisnewsyncro
All depends on the tyre size
there's a good, "rule of thumb" calculation explained in the wiki, whch works it out from the max pressure of your tyre
Re: tyre pressure
Posted: 14 Sep 2009, 07:07
by umgum
tyre size is 185x65x15
Re: tyre pressure
Posted: 14 Sep 2009, 07:16
by andisnewsyncro
Give this a go, it worked for me with a bit of "fine tuning"
https://club8090.co.uk/wiki/Ge ... ssure_calc

Re: tyre pressure
Posted: 14 Sep 2009, 09:04
by toomanytoys
Mmm.. I'd be very surprisd if they are actually van tyres at that size... so may not have a high enough load rating for the rear axle..
What does it say on the tyre?.. (Should read something like.. 185/65r15 Q97, or have a C in there as well)
Also.. your speedo will be about 4.5% faster than you are going.. so added to the 5-10% thay are already inaccurate, an indicated 60 is prob only 50...