[urq] Tire pressure for ice racing ?

[Louis-Alain Richard]

Scott, why "good luck " ? You think I'll need some ? :-)

Never popped a tire, but I never ran lower than 26 yet. I'll bring the two sets next time, just in case I pop a tire. These are difficult to replace on the rim when temps are around 0F and there is no air supply close... Brady can confirm...

About the rear diff, when locked it makes the rear end very nervous under power but as you say, tight corners are a nightmare if you missed your approach. She just goes straight. And with that stock engine, 7:1 compression ratio, there is NO torque below 3000 rpm. I must play with the revs and the clutch to make the rear end slip in some slow corners.

So no one think that the Michelin will be any good ? 

Louis-Alain



-----Message d'origine-----

 At Steamboat Springs Ice track with the urq, we run between 24 and 26psi with WS50 Blizzacks.  For the urq on ice, the best pressure will be lower, generally 24-28psi.  I run to the low end of that using innertubes, but it really depends on the tire size, a 205 on a fuch 15x7 will tend to pop it's bead when encoutering a snow patch at 25psi (btdt), but a 205 on a 6in rim or a 215 on a 7 should be fine.  

The studded/bolted/spiked  tire will always have the advantage on an Ice track.  At Steamboat, none of these are allowed, but usually in Ice racing competition, non-studded ice tires are in a separate competition category.  I also suggest that you run the center locked always.  I also run the rear locked, but can be a handful in a tight competition course.

HTH and good luck

Scott J
84 Urq
83 Urq ice track car