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Hummer H3 Tires and Wheels

11 messages,  Last post on Feb 07, 2008 at 12:57 PM

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What is this discussion about? HUMMER H3, Tires, Wheels, SUV

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#9 of 11 First 500 miles by tired_old_dave Jan 29, 2008 (1:27 pm)
A discussion or two about break-in for a new vehicle. Beat it to death to seal the rings. No, don't do that follow the manufacturer's recommendation. H3 manual shows a 500 mile break-in with no high speeds and no constant speed. Noticed Tirerack basics lists a 500 mile break-in to remove the mold release agents from the tire manufacturing process. Just a coincidence.
#10 of 11 Too lazy to keep looking by tired_old_dave Feb 07, 2008 (12:02 pm)
Read two other forums (lurk there only), looking for answers to some questions about tires for the H3 P-metric and LT-metric. These forums seem geared towards off-road and putting the biggest tires you can afford on it and you're good to go.   Always wondered (like others asked elsewhere) why the LT's are "C" load range and replacement tires are "D" load range. Old favorites links go nowhere now but an old toyo pdf still lives on the hard drive. "C" is the highest load range with change ability to P-metric. Was the H3 designed for the highway and given "C"'s to accommodate the H image.   Still thinking of replacement for the duellers [Blue Beauty is a grocery getter for now - kumho all terrain tire and toyo. (Please no buy usa only-look where your tire was really made and where were you when the rust belt tooling was shipped overseas as well as mid west shoe factories and garments industry)]Toyo a consideration since had them as oe on a base Previa, happy with spectrums on the malibu, and hall racing using toyo.   Don't have the Industry Handbook, note that the P-metric and LT-metric H3 placard both show 35psi. H3 is at 38 now and was 40-42. What tire pressure when the replacements are "D" load range or why not drop down to a passenger tire for ride and mileage while grocery getting.   Found new link to load range, pressures, and etc. http://www.toyo.com/docs/tires/tiresafety.asp
#11 of 11 Apology to forum due? Or a bad day for someone? by tired_old_dave Feb 07, 2008 (12:57 pm)
Just got off the phone with toyo 1-800-678-3250 (per the pdf - wrong-that is corp hq)and asked for the technical assistance to get correct pressure for an LT 285/75/16 D load range and was told that graph is flat for the LT size 285/75/16 and to use 35psi, the vehicle manufacturer recommendation, even though the max psi for a D is 65psi. Told to use 35psi at 55mph and at 95mph.

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