Idont believe there any "bigger". more desirable for street use is what I'm thinkin.
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A pic mounted.:cool: Sorry Mods feel free to shrink!
http://img65.imageshack.us/img65/381/36730089fb6.jpg
:idea: take em to a truck tyre shop thats easyer....
I have XZL's on mine. Adam, Oilcan, has XL's on his. At the 2006 FE, he was able to go more places than me at road air pressures. Once I got all the way down to 15 from 70, I didn't notice any difference. The XL is best described as a "mud" tire while the XZL is the "all terrain" version. I have put about 3000 road miles on the XZL set now and can't see any signs of wear. Except for the little chunks that got ripped out trying to climbing the rock cliff just before the picture that showed Will's blue 715 on the temp site climbing it was taken.
Just to add to barrman's post, I never dropped my XL's below 30 psi at the FE. 10 or 15 would have worked out even better.
Uncut XL's do like to skid around in rain and ice if you're not nice to them, though.
Was that the one where you didn't have the selectros set to lock?
No, that was the climb where my now sitting in the field front bumper was too big to let me get the right angle. That along with the carb issues I was having left me standing on the rear trailer hitch. Driver error could have played a bit too.
Something else about the XL/XZL debate. When DP, Snuffy and Asbestosglove went and picked up a trailer full of both types a year or so ago, they had them all stacked on the trailer. Snuffy told me the XZL stack was about 6" higher for 5 tires than a stack of 5 XL tires. So, they are maybe an inch or so wider.
Here's a pic of the trailer as we were unloading mine (and restacking ALL the tires w/o the pallets). The second stack from the left is mixed, that's an XZL on the bottom.
Thumbnailed as it's 1024x768 so you can see it better.
http://img222.imageshack.us/img222/8...ireshw4.th.jpg
That's asbestosglove on the left, snuffy on the right.