Whats the difference between a MT90-16 rear wheel and a MU85-16 rear wheel? I wanna put the MU85 on my 2000 RK with 3/4 in rear axle. The Mu85 is off a 06 street glide with 1' axle will the wheels fit? Thanks

 

The tires sizes you listed really have nothing to do with the axel size. The MT has a slightly higher profile, higher load rating and is approximately is a 140 width. The MU is a 130, lower profile and load rating.

I run the MT90-16 on the rear, and the MU85-16 on the front of my Road King, both wheels are 3/4 axel (agian no factor in regards to the tires sizes you listed).

I am running Dunlop E3's.

 

Thanks for the quick reply I guess my question now is Imwanting to buy a set of wheels off a 06 streetglide with 1" axles will they fit my 2000 roadking with 3/4" axles? what mods am I looking at to make them fit? Thanks!

 

You sure you got this front rear tire size right?

 

Your front axel should already be 1"
Your rear is currently 3/4" and it is fairly easy to change the 06 rim to 3/4" bearings. You will have to use your rear pulley since 2000 used the wider belt. I did this on my 2000 RKC with no clerance issues and have over 10k on this setup.

 

MU has a higher load rating and should go on the rear. MT for front.

 

Does the front pulley care what size belt you use. My understanding is the 1" belts are actually stronger due to new material technology. Might be a good time to upgrade. Just askin.

 

if the bike has a MT90 then you know it'll take an MT.

The MU is slightly wider with more carrying capacity, but may not fit the bike.

some do, some don't

I know a few guys running mu85 on evo baggers, mine wouldn't- clearances were too tight, and I'm not gonna eat up a belt for a marginal increase in capacity.


If really wanted you could gain some room with a narrow belt ( and pulleys) but that's pretty costly for labor, unless you are already pulling the swingarm off.

smarter is a chain conversion to gain width.

chain is stronger, easier to replace, gearing changes with a easy sprocket swap etc etc


2 reasons for the belt drive

low maintenance

reduced noise emissions


mike

 

There's some really mixed up answers here! Let's start again.

The two wheels you mention have the same rim size of 3" wide. The axle sizes don't matter! The MT tyre is nominally 130/90 and the MU tyre is 140/85, in other words about 3/8" wider. The MU was fitted to later bikes such as the 2006 bike, for its higher load rating. It will fit your wheel and you should find you can fit it to your bike. As it is wider than the tyres you have been using there is a possibility you will need to trim your belt guard, to stop the tyre rubbing against it. I ran 140 tyres on my 1990 Glide by doing that with no other problems.

Hope that helps!

 

Great thanks everybody for your replies