I have asked a question at the end of the note. I have two used tires ( obtained at Mexican tire shop ) on the front of my = Explorer. 1/4 inch of tread is left. I was driving on a dirt road that had rocks on = it from time to time. The rocks were as large as 1 inch. First I got a slow leak on the passenger side front tire. I fixed that wit= h a plug of tar? impregnated string. Father down the road there was a soft= !bang! and the driver side tire was leaking from a hole about 5 mm wide. = I put some impregnated string in this hole and slowed the leak such that th= e tire would hold air about two hours ( I am waving my hand in the air ). Since it was *labor day holiday Monday* no tire shop was open where I was. I elected to drive back to Denver with two cans of tire inflator at the rea= dy. I was stopping every 10 minutes to look at both tires. 15 minutes out of Fairplay , I ran into a massive traffic stoppage. The tr= affic was NOT moving at all as far as the eye could see ( which was about a= kilometer ). I did a U-turn and pulled off on a side road. Now I decided to extract the spare tire and replace the driver's front tire= .. I had two lug wrenches and an ABS cheater pipe. I weigh 111 kilograms a= nd have medium large muscles. After straining , standing on the wrench , e= tc...... ( since the lug wrenches extend away parallel to the centerline of= the lug , it is hard to get super good torque ) ..... I was unable to remo= ve any ( that is zero ) of the lugs. I drove back to Fairplay. ( I am omitting a lot of swear words in this des= cription ). After trying to find an impact wrench ( none ) , finding a hug= e crescent wrench ( did not work ) ..... I called a tow truck. Just then a= large teenager happened by and he and I applied the T-lug wrench to the lu= gs. He was utterly amazed at how tight they were. We got 4 of the 5 lugs = off and then ( as I feared ) , the lug wrenched snapped ( previously could= see that it was winding up ). With even more difficulty we removed the la= st lug with the one-side wrench ( which flexed quite a bit ). As each lug = released , it made a cracking noise. I oiled the lugs , put on the spare , cancelled the tow truck , and went ba= ck to Denver using an alternative route. Could these have been counterfeit tires ? It appears they can be easily ho= le punched by a rock. They say they are steel-belted radials. Looking clo= sely , the sidewalls seem to be wobbly with a sine curve of period 30 to 40= cms and an amplitude of 5 mm. Normally I do not drive on rocky roads. 99guspuppet --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .