195/50/15 Tyre Pressures?

[Woznaldo]

What is a good starting pressure for day to day and fast road work when running 195/50/15 tyres?

[c7borg]

I've just got a 32psi fits all theory.. although would be interested to see what everyone else runs

[sphinX]

26 at front and 28 on rear for me, but mines stripped ;)

[Woznaldo]

26 at front and 28 on rear for me, but mines stripped ;)

Wouldn't you run more pressure at the front or do you want less grip at the rear to combat understeer?

[sphinX]

Wouldn't you run more pressure at the front or do you want less grip at the rear to combat understeer?

Well I used to run 30/30 or 32/32 but that gave me less grip when accelerating from standing or through 2nd gear so would eat the tyres.

Now I have loads of grip off line and through 2nd gear and also the car sticks to the road through the corners, but that's probably aided by the suspension set up as well which is spot on.

[Woznaldo]

Sounds good. Time to have a play then and see how it feels!

[rs250nut]

26 at front and 28 on rear for me, but mines stripped ;)

Your kidding right?

[dave j gtt]

Your kidding right?

whats your opinion ?

[Alastair]

Toyo R888:

Cold - 21 front rear 20. I sometimes nudge up the fronts a but more depending on conditions.

Toyo T1S and T1R 194 45 15 cold: 27 front 25 rear for track, road: 30 front 29 rear.

[rs250nut]

whats your opinion ?

The only time I would ever have less pressure in the fronts is on the strip, you cant tell me that with more weight over the front wheels you would run lower pressures than a rear end with no weight?

[sphinX]

The only time I would ever have less pressure in the fronts is on the strip, you cant tell me that with more weight over the front wheels you would run lower pressures than a rear end with no weight?

Works for me, so no i'm not kidding... great grip, great tyre wear, can't complain. Open minded though :)

[Alastair]

Works for me, so no i'm not kidding... great grip, great tyre wear, can't complain. Open minded though :)


It all depends on your suspension set up and how you like the car to feel on the limit - lose front / rear. All a matter of personal choice, if it works go for it.:agree:

[sphinX]

Prefer loose rear at limit, don't want to understeer into a tree..

[dangerous dave]

on my 13" r888 i ran 30 front 28 rear with nitrogen and i still had uneven wear in the centers of the tyres.. id run 28 front next time..

on my 15's i go with 30 front 28 rear and haven't seen any uneven wear yet, just keep your eyes on it.. sometimes handling and grip are at the cost of good tyre wear:cartman: and thats up to the driver..:)

[Woznaldo]

Ultimately you will need different pressures for different uses because it's the working temperature that's important. That's why when doing track work people will run a lower pressure as the tyres will get hotter which would mean that the working would be roughly the same as if you a set the tyre pressure higher when cold and just did the daily commute. If that makes sense.

The way we get max grip, is by having an even pressure across the whole width of the tyre and this in turn should return best wear rate too but only when at working pressure.

This is why aircraft/racers use nitrogen to inflate their tyres, because nitrogen is more stable and has less expansion (less moisture) the regular air.

What I have done in the past, is run a harder compound tyre at the rear for less rear end grip but, can still get even wear rates.;)