correct tyre pressure for size>

[supernova1983]

195 55 R15 85v

any help would be great

[Stuart]

std manual pressure

maybe 2-5 psi more if you like a bit more wall stiffness

[supernova1983]

sorry thats thing they not from the car origionally

[polly]

28 -30 psi is wat you should use on every road car regardless of tire size

[Stuart]

it dosent matter that they arent original spec tyres. your car weighs the same etc

so you use the std pressures. maybe bung a few psi mroe in for fun.

[Aragorn]

std nova 13"'s run at 24psi

u cant really run a bigger lower profile tire that low

i normally run 30-32 on the front and 28-30 on the back

upper limit for motorway long haul and lower limit for fast road driving

[alistairolsen]

I run 45 preofile. You cant just go on the book figures, different contact patch, different sidewall shape etc. And as for a universal figure for all cars, not a chance. I used to run 30 all round and the car felt horrible, very skittish and bumpy. I dropped to 28 front and 25 rear which seems a lot better, but I have had it suggested to get as low as 25 front 23 rear, although how long tyres last like this I dont know!!

The best way is thru trial end error, tyr a few different pressures on a given stretch of dry road and see how it feels. Handling will always be a comropmise between grip and comfort/cost. Find a figure you feel happy with, up it a few psi for long motorway runs where the road is smooth and the tyres will heat up, you also dont need out and out cornering. also if you load the car up.