Thanks for this info Scooter. I think you told it before but I wanted to reconfirm.
-Allen-
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Just measured the circumference of the leather grip on both an 806.10 & an 805.11 - both have their original leather covering & both measure 7.6 cm
Here's a shot which demonstrates the difference in rim thickness between an original RSR wheel & a std RS (806.10) leather wheel :
I wouldn't describe any of those (non-RSR) wheels as 'thick grip' ...