tallest tires

[1968aj]

I have a 1972 c20 longhorn. it has rear leaf springs. I am about to install late model aluminum chevy 8 lug factory wheels. waiting on new lug nuts to get here. I want the tallest tires I can fit on it . it has like a 4/11 gear in it. trying to make it more highway friendly.going to buy new tires soon. any ideas on how tall of a 16 in. tire I can run ?

[Mike C]

The problem with getting tall tires is they want to get wider! I ran 265 75 16 on my C2500 all around. Another choice would be 255 85 16. If you want to stay skinny, the 235 85 16. But you are still stuck around 32-33" tall.

HO52 or Dana 60 rear in your truck? I have a parts truck with a 60 so not sure if that's the only option. But you can at least get lower numerically gears for it unlike the HO52.

Pick the tire you want/like for the wheel and stance your truck has then keep your ears open for a 3.54 geared Dana 60 which was a great combo in my truck with 402/TH400.
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[HSRACER]

Are you keeping or selling this one?

[65standard]

I have 7.50x16 tires with 4.57 gear stock.

[1972RedNeck]

7.50R16's are right on 32" tall, 235/85's are a smidgen shorter and wider and 255/85's are almost 33" and wider still.

The tire we need is an 8.25R16. They are the same width as a 235 but almost 34" tall. The thing is, I have searched far and wide and have yet to come across a radial version for sale here in the states. Overseas they are a very common size.

[Jonlopes]

My 71 C20 longhorn with rear leaf springs runs LT285/75R16 and they fit just fine with no rubbing on 16X8 0 offset wheels. They are 33" high by about 11.5" wide.

[1968aj]

Originally Posted by HSRACER

Are you keeping or selling this one?

every thing is for sale at the right price. somebody would have to want this one really bad before I would sell it

[SS Tim]

Remember while tire height (rolling radius actually) is a determining factor in how fast or slow and engine turns at speed (65mph through 4.11s in these examples). You need to do the numbers and don't expect much change.
http://www.summitracing.com/expertad...tio-calculator
30" 2985
32" 2798
33" 2713
34" 2633
36" 2487

[SS Tim]

Originally Posted by 1972RedNeck

7.50R16's are right on 32" tall, 235/85's are a smidgen shorter and wider and 255/85's are almost 33" and wider still.

The tire we need is an 8.25R16. They are the same width as a 235 but almost 34" tall. The thing is, I have searched far and wide and have yet to come across a radial version for sale here in the states. Overseas they are a very common size.

If you find some 235/100R16E tires here let me know! :-)

[dukkie]

Originally Posted by Jonlopes

My 71 C20 longhorn with rear leaf springs runs LT285/75R16 and they fit just fine with no rubbing on 16X8 0 offset wheels. They are 33" high by about 11.5" wide.

so your fitting a 33" x 11.5" at factory height? could that still fit if it was lowered 3"

[sodly]

7.50R16 are the tallest. Closest metric is 215 85R16 but they are about an inch shorter.