Cb360/MikesXS rim/tire size questions

[Dr. Stupid]

Hey guys, I have a few questions about upgrading the rims on my CB360 project.

I'm planning to get a pair of MikesXS 2.15" rims to upgrade from the heavy stock steel rims. However, I'm not sure about what tires to run on them. I like the look of the Coker e70p tires, but their speed rating is lower than I'd like. So, now I'm looking at a set of Kenda Retroactive tires, but the 18s only come in 100/90 and 120/90. Will these fit the 2.15" rims, as well as the bike itself without rubbing? And by fit, I mean safely... not cramming it on a rim that's too narrow. Kenda doesn't have recommended rim widths listed on their site. The Avon RoadRiders will work for sure, but they're a bit out of my price range.

Any thoughts on these tire/rim combos on the 360? Any recommendations for other tires?

 

[jpmobius]

The 120 tire is too wide for the 2.15 rim. The rim is an integral component of the tire because it defines the cross sectional shape it will have when mounted, and hence will sharply affect its function. The 2.15 rim on the front will be very wide for the front no matter what tire you use, but ok for the back. 1.6 is stock for the front. 1.85 is the next size up, and will be a good match for the 2.25 rear. 90/90-18 will be good on the front. 110/80-18 will be good on the rear. There is no value what so ever in going larger, unless you will only be putting around town, handling is completely unimportant to you, and you are exclusively interested in how your bike looks. There is nothing wrong with that, but your concern over the speed rating is at odds with the concept. If you like the Cokers, why not use them if they come in the correct sizes? You will find it very difficult (impossible) getting your 360 past 112mph unless you spend a LOT of money on horsepower, so the rating is fine.

We are all contaminated looking at all the new bikes with very wide wheels and tires. Old bikes do not like wide tires as they were not designed for them. Getting your bike to like anything larger will require - well, altering your bike so severely it will be a different bike. A 1.85 on the front and 2.15 on the back of your bike IS wide for your bike and a substantial change. Going bigger than that will have an adverse affect on handling. FWIW, the Avon's are a bit more money, (gee, not by much - just did a quick look) but well worth it (I personally absolutely love the Avon roadriders). There is no more important place to put your motorcycle dollars, save up just a bit more - you won't be disappointed.

Aslo, realize that there are front rims and rear rims. They are not the same nor interchangeable. Front rims are drilled for the small disc brake diameter hubs, and rears are drilled for the large diameter drum brake hubs. Other than that, a rim is a rim. Normally rims are drilled for the specific size hub they will be fitted to, but the "front" and "back" designations are close enough. I have bought many rims from MikesXS and they are very nice for the money.

 

[crazypj]

From experience, WM 3, 2.15 front and rear are not a problem.
90/90 and 110/90 work great on them. You don't need a 120 rear
This is a picture of buddies 360 with WM3 rims front and rear plus 90/90 and 110/90 tyres