[mahout]

[quote=pb and h;359035]I think we should create a thread on Tire Life vs. PSI. This would have people list how long their stock tires or any other tire lasted(miles driven) and the tire pressure(s) they used during the life of that tire. We could then get to the bottom of this issue. A brief description of their driving habits would be good to know as well.


At lunch we gathered the bench racers to get an opinion in general. Surprisingly, we all agreed: raising tire pressure to competitive levels, i.e. 40 to 50 psi on thr street for better mpg about cuts tire life in half per state inspection rules. Note that most tires have a center grove depth of 10/32" and outer groves 13/32" so at the end of 20K miles on a Geo Metro or Civic HX with 40 - 42 psig the front tires center groove is less than 2/32" while the outer groves are at least 6/32",
Inspections require minimum 2/32 on every groove so new front tires are needed.
Since we don't rotate tires to save the rotation charges, we also save an instant cash outlay by buying 2 tires. Over the long run our resident accountant points out the overall cost is reduced cause we keep more cash in our pocket for longer periods of time. Only an accountant ...