TR6 TR6 tire psi?

[Brighton Bob]

I am running 205 tires on my TR6, the 185's called for 20psi front and 24psi rear. I have been playing around with 28psi on the 205's. What say yee?

Brighton Bob

 

[NutmegCT]

"What say ye all?" I'm betting that every TR owner tweaks the psi to a comfy compromise between road grip, control while driving, and comfort. Comfort is probably the least important.

 

[Sarastro]

Where did the 20/24 PSI spec come from? Most modern tires are designed to run around 30 PSI. I keep mine around 28-30, which seems to give the best feel. I don't do a lot of (ahem!) sporty driving, so I can't comment on that.

 

[Brighton Bob]

Thanks for the responses. The 20/24psi came from the plate on the inside of the glove box door. I agree that's too low, when I had the 185's I would run 24-26psi all around. With the 205's 28psi all around. I read a article recently that said to Decrease psi when going to bigger tires. I bought my car new in '74 and back then we would run 30+ psi at autocrosses, chalking the tire edges and adding psi until we stopped rolling off the tread onto the side walls. But we would lower the psi for the drive home. I suppose too high psi might affect wet braking. Just the retired engineer in me coming out.

 

[Gerald_Gordon]

The late engineer Randall Young ("TR3driver" on this forum) used to run 27 psi in the front and 31 psi in the rear, if I recall correctly, and that is what I use in my TR4 with front and rear anti-sway bars.

 

[Brighton Bob]

Thanks for the info.