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What size tire for 15x8 Truck Ralleys

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11-25-2014, 08:45 AM	#15
engineer_gregh Registered User Join Date: Feb 2012 Location: Smyrna TN Posts: 1,153	Re: What size tire for 15x8 Truck Ralleys Keep in mind that tire height will effect your engine RPM's at highway speeds. If you're running a 3.73 or higher gear with a stock 350 or 400 transmission I would be mindful of how you most often drive your truck. Formula is MPH x Ratio x 336 / tire height = RPM. Already Gone's comments above list the height specs that most web site suggest but when I put a tape measure on the rally's I have with 275x60x15 the height is actually 27". __________________ 1971 Longbed BB Cheyenne Super 1972 Longbed SB Cheyenne Super 1972 Longbed Highlander Custom Deluxe 1975 K5 4x4 full convertible Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=645165 Greg Smyrna TN

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