And 8x7 rim will force the tire to become narrower which will make it taller. Compared to an 8x8 wheel there will be just a slight difference when you ride. Now you could just air up your rears to 12-14lbs and stick them on the south side of your house for a day. It will drastically change the whole tires size and profile. .190 rims vs .125 you won't notice any difference when just riding around and bowling, again none, even in the front. The weights only come into play when hillshooting or sand drags. If you are a very aggressive rider like our group is we run .190's on front because we jump and pound through the whoops. I run stock wheels on front and stock LTR 8x8's on back. I have Honda hubs on my Raptor rear axle. Though not the lightest combo my wheels aren't going to bend,, ever.. Bigger 22'" front tires make the Raptors turn and float better. Again not a good set up for hillshooting or Sand drags, but for bowling it's the hot ticket. Don't buy a 10" rear wheel for any reason unless you like bending wheels all the time.
Tires. We have run every tire imaginable, Brats, Haulers, Combo's, Gliders, ect. Best tire out there in all situations is a Glider. I will catch alot of flak for this. It really is the best tire. It launches hard and is less likely to lift the front end. It leaves a much smaller roost to bowl behind which all your friends will love. Gliders let the Raptors motor rev out requireing less power and quicker over rev, You can slide the back end if you know how, (a lot of people dont).. Gliders are the best kept secret. We ran a 9 paddle Glider on a Kenz 780 and it ripped out of the hole and revved to the moon up the biggest dune in the country (Utahs Sand Mtn). We run 8 paddle Gliders on our 67hp stock bore Raptprs now. All our buddies run them on their 450's. There is nothing good about Haulers. They want to wheelie, they leave a huge annoying roost, they require huge amounts of hp on the topend due to the taller paddle. So the key to Gliders is not that they are considered a pussy paddle. It's the best kept secret most people aren't willing to try. The key is just and an extra paddle or two for your particlar build. More and more people here in Utah are running Gliders after they can see for themselves what a pussy tire like that really is cable of on a 450 or even a huge Kenz built 780. Our builder stocks mostly Gliders on the shelf after he seen for himself what they can do. 10 sets of Gliders for every pair of Haulers.