TJ Tire Size

You can go to a 31x10.5, but you will lose a bunch of traction going wider.

I recommend you take a tape measure to your tread to see what is actually on the road (the 9.5" is the sidewall width) and try to shop for something about the same width if you like your current grab on the road. Taller and stay thin is my recommendation.

I got a radical increase in traction when I went from a 10.5 to a 9.5, but I got a large jump smaller in tread width on the road due to the taller and fatter sidewall on my 33x9.5's.

Mike

BM wrote:

what the hell is on 02 safari?

sahara?

Yeah....my typing fingers got ahead of my brain before I hit "send" Must be the alzheimers kicking in...too many aluminum pots when I was a kid.

BM

I'm thinking of upping to those on my '99 this month, as my 30's have worn out, and my speedo has always read high (+5-7 MPH compared to a good GPS).

I figure that the 31's should get the speed closer to correct.

Rubis get a 32.

From the Jeep.com website, in reference to the Rubicon Goodyear MTR's:

"Built with exclusive Durawall triple-ply puncture-resistant sidewalls, these beasty 31-inch tires will grab ledges and anything else they can sink their claws into."

In actuality, they are LT245/75R16, which work out to be about 30.75" diameter.

What sizes can be fit into a stock '02 WJ and perhaps one with a 1.5-2 inch coil lift?

Thanks

My bad. I was sure the Rubi got 32s.

I got it.

I wrote an Excel calculator that lets me plug in the tire dimensions and arrive at the outside diameter. I just didn't know the dimensions of the Rubi's tires, and I thought they worked out to 32", not 31".

Try this formula with your calculator * * 2 / 25.4 + The result is the overall diameter.

If you created a new Excel spread sheet, you could label the A column as Size, the B column as Aspect Ratio, and the C column as Rim, and the D column as Outside Diameter. The D column would get the formula =((A2*B2)*2 /

The result in the D cells would be the diameter of the tires you are interested in.

TIP Highlight the D2 cell, and drag the handlebar straight down to apply the formula with the approriate alterations to account for the Rows involved.

Can you e-mail me the excel sheet?

Thanks

hmmm. I do this with 225,75 and 15 plugged in and I get an answer of

Tomes,

You probably entered the aspect ratio as 75 where, with this formula you need to enter it as .75. I simplified the formula to use the aspect ratio without the decimal point and also condensed all of the conversions coming up with A2*B2/1270+C2 for the formula. Remember, with this formula, you enter the aspect ratio without the decimal point(i.e. 75 instead of .75).

Chris

Yep that does it. Thanks Chris. Handy tool now. Tomes