pics of 39's on stock M715

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Originally Posted by vrod02

Porky ,There Bias not radials.

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Cool. Thanks.

Well I took the m-truck on its long road trip in the 5 months I owned it. 82 miles around trip to Wal-Mart. The tires ran good know unusual tires pressure problems. When I did make it home I increased the psi from 12 to 25 and then drove around some more but couldn't tell any difference. I still haven't cut the inner fender yet,& that is where the rub is at.
I did manage to clear some of the junk out from my 87 GW, & put them side by side to compare. The GW has only 1" less difference between the 2 diff. covers, & 2" less to the bottom of the leaf springs. The GW is on 35" SSR's, 10" lift, 4.56 gears, and a Detroit.
http://img304.imageshack.us/img304/8735/1000271sv8.jpg

nice!

its been 2 1/2 years since this post & the Iroks are still running smooth.....................:)

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Originally Posted by boondockster

I should have also mentioned that you can apply this directly to engine RPM at a given speed:

old diameter / new diameter * old RPM = new RPM

So if we calculate for change in RPM at 50 MPH:

34 / 38 * 2900 = 2595 RPM

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Way off the subject. "Boondockster" the 1st NJ jeep club (1969) was the Boondock Blazers. And was started up in your area (Sparta)

The 715s definitely look better with 38s or larger.