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Archive for October 23rd, 2008
When to replace tires
Posted by Tom from Edgewood, KY, US on October 23, 2008
I am with a fire dept. who has a firetruck with Goodyear G124 12R22.5 on the rear and G286 315/80R22.5 on the front. At what tread depth should we consider to replace the tires?
If you were maintaining an over the road, commercial truck, you would be required to have at least 2/3nd's" tread depth on your steer tires and 1/32nd's" on your drive tires. Below these tread depths, local inspectors could write up your vehicle as unsafe. But, with a fire truck, I would suggest not letting them wear down to these, shallow depths. I would think a fire truck could encounter some muddy, snowy or other conditions that having more tread depth could make a difference in getting there or not. I suggest at least 4/32nd's" for the steer and 6/32nd's for the drive tires of a fire truck.