Hi All

I have just had 225/75 R16 fitted on my '88 RRC.

Could someone please tell what the correct tyre pressure should be for on-road use?

Thanks.

Treva

Hi Treva

My 92 Classic has got 235's on it (but the rest is the same) and i run 28F and 32R.

HTH

Chris J

Thanks Chris, I'll give that a try.

Treva.

I had a classic with standard and fatter variations on and the advice I got varied from 25F-35R through 27F-37R to 30F-35R. Whatever I put in it was still like driving a boat. The tyre wear didn't seem uneven at any stage. Whatever I put in the fronts always LOOKED under inflated. Sad day when it went, though. regards P.S

Running pressure that is too high will give you a rougher ride and wear out the centre quicker. To determine the optimal tire pressure for a given tire and load, use the chalk line method as follows:

1) Fill the tires to some arbitrarily high pressure (38 psi is good),

2) draw a straight line across the tread of each of the tires (perpendicular to the sidewall),

3) drive in a straight line for ~ 100 feet,

4) examine the chalk lines.

If the line is gone only in the middle, the tire is overinflated. Reduce air pressure a couple of psi and try again.
If the line is gone only near the edges, the tire is underinflated. Add air and repeat process.
If the line is gone altogether, the inflation is good for the load in the vehicle. Write the numbers down for future reference.

nice easy check there Dopey.

good wun