How are you guys jacking up your Yaris? - Toyota Yaris Forums

ozmdd · 11-07-2008, 11:18 AM

I can tell you two facts about tire rotation wear from personal experience and some engineering research:

FWD vehicles suffer significantly more wear to the front tires than the rear for three reasons: engine/tranny weight, steering wear, acceleration/braking wear (depends on the driver). Rotation will definitely aid in equalizing this wear between the 4 tires.

Modern steel belted radials shold only rotate in one direction, and do risk delamination/belt twisting when run on the opposite side of the vehicle, though the risk varies greatly depending on vehicle type, tire sidewall height and inflation pressure. Often the tire will not fail, but the lateral belts can become "curved" in the original rotation direction, and then resist flex in that direction when reversed. On larger tires (33" on my Jeep) this can result in a noticeable wave in the tread. Also, I have seen tires blow-out after being installed (used) without knowing the original rotation, although that could have been caused by a number of other factors too.

Bottom line: Rotate your tires regularly if you prefer to replace all 4 at once and want to get the maximum mileage from your tires. don't rotate at all if you don't mind replacing 2 at a time or don't care if 2 of your tires still have more tread left when you replace them.
NEVER cross-rotate modern radial tires, directional or not. :)

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11-07-2008, 11:18 AM	#19
ozmdd Reluctantly Crouched... Drives: 2008 Yaris HB M/T Join Date: Oct 2008 Location: DFW, TX Posts: 867	I can tell you two facts about tire rotation wear from personal experience and some engineering research: FWD vehicles suffer significantly more wear to the front tires than the rear for three reasons: engine/tranny weight, steering wear, acceleration/braking wear (depends on the driver). Rotation will definitely aid in equalizing this wear between the 4 tires. Modern steel belted radials shold only rotate in one direction, and do risk delamination/belt twisting when run on the opposite side of the vehicle, though the risk varies greatly depending on vehicle type, tire sidewall height and inflation pressure. Often the tire will not fail, but the lateral belts can become "curved" in the original rotation direction, and then resist flex in that direction when reversed. On larger tires (33" on my Jeep) this can result in a noticeable wave in the tread. Also, I have seen tires blow-out after being installed (used) without knowing the original rotation, although that could have been caused by a number of other factors too. Bottom line: Rotate your tires regularly if you prefer to replace all 4 at once and want to get the maximum mileage from your tires. don't rotate at all if you don't mind replacing 2 at a time or don't care if 2 of your tires still have more tread left when you replace them. NEVER cross-rotate modern radial tires, directional or not. :)