Roof height???

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Jul 26, 2016 | 02:39 PM

#31

LSchicago2

Fleet Mechanic

Joined: Jun 2006

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Quote:

Originally Posted by EightySecond

Do you think that the math if a truck has 20" wheels would be to just add 1" to the numbers in this pdf?

Rim diameter has nothing to do with tire height.

Jul 26, 2016 | 02:44 PM

#32

EightySecond

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From: A corn field in IN.

Quote:

Originally Posted by LSchicago2

Rim diameter has nothing to do with tire height.

Right, I agree there. I have seen it posted here a few times that a truck that has the 20" wheels will sit 1" higher (I think) than the others due to the height of the tire on the rim. Is that true?

Jul 26, 2016 | 02:49 PM

#33

LSchicago2

Fleet Mechanic

Joined: Jun 2006

Posts: 1,684

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Quote:

Originally Posted by EightySecond

Right, I agree there. I have seen it posted here a few times that a truck that has the 20" wheels will sit 1" higher (I think) than the others due to the height of the tire on the rim. Is that true?

It depends solely on tire size. You can have a 20" tire that is 22" tall, or you can have a 20" tire that is 40" tall.

Jul 26, 2016 | 02:51 PM

#34

troverman

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Joined: Apr 2013

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From: NH

Quote:

Originally Posted by EightySecond

Right, I agree there. I have seen it posted here a few times that a truck that has the 20" wheels will sit 1" higher (I think) than the others due to the height of the tire on the rim. Is that true?

The 20" rims come with the largest diameter tires, about 34" tall. The common 18" size is about 33" tall. Remember that "height" is only affected by the amount of tire below the center of the axle, so divide by 2. That means the 20" tire trucks are only about 1/2" taller than the 18" tire trucks.

Jul 26, 2016 | 06:26 PM

#35

EightySecond

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From: A corn field in IN.

That's what I was looking for, thanks.

Jul 26, 2016 | 08:06 PM

#36

Xwild

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Joined: Feb 2005

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From: Greene, NY

Quote:

Originally Posted by Rasalas

It might be less money to re-trim the garage door. Maybe even cheat a little off the header if it is that close.

Definitely cheaper than the repair bill when you cross the threshold with a little more bounce then normal due to a stone/snow/ice/speed and crease the cab roof...