Riddle me this.

beertestr

Club Member
How is it that my 28x10.5 M/T ET Drags are wider tread than my 28x11.5 ET Streets? Ignore the sidewalls the Streets are on a 10" rim and the Drags are on a 7" rim just for mockup. I tried to line up rhe start if the tread on the rh side of the pic.

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ET Streets always measure narrow. The 11.5 ET Street is equivalent to the 10.5 ET Drag.

--Joe
 
ET Streets always measure narrow. The 11.5 ET Street is equivalent to the 10.5 ET Drag.

--Joe

Equivalent isn't even close. The Street is narrower than the Drag even though the Street is rated an inch wider.

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ET Drag is measured by tread width. ET Street is measured sidewall to sidewall. 28x11.5 et street is like a 8.9" tread from what I remember. A 28x12.5 et street is close to a true 10.5 et drag.

Oh and that 28x11.5 et street,is about 27.3" tall, not really 28".. My 275/60/15 Hoosier radial was a lot more tire when i went from 28x11.5 ET Street to a Hoosier radial. .
 
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What everyone above said. They have always been way more narrow. Back in the day I had to get a 28x12.50 ET street to get a similar size to my 28x10.5 slicks.
 
Thanks everybody for the responses. Autoroc, I didnt realize the two tire models were not measured the same way.
Now I think i should have mounted the Drags on the 10" wheels and the streets on my narrower 7's or 8.5's.

The learning curve of these details is steep.. i guess we'll see how i hook with the Streets and go from there.

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Before buying tires next time go to the manufacturers website. Hoosier, MT etc all have very detailed tire info.

A quick look says the tread width of the ET Street is 8.6" versus 10.0" for the ET Drag. You would have to go to a 28x12.5x15 ET Street to get the same 10.0" tread width.

--Joe
 
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