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by **Keith1069** » Thu Jul 12, 2012 1:35 am

Keith, if I read that right you have an 18 wm3 (not wm4) on the rear?
And on the front?

That's it, same front and back but 90 x 19 front which being AM26 comes out as a 100 on width. See pics on Marchant and Durward thread for what they look like.

by **Anglophile** » Thu Jul 12, 2012 4:32 am

I've got the original WM2 rims front and rear with Avon AM26, 100/90-19. They've been doing well after 2,000 miles of recent road use. The rims don't feel "thin" even at 75mph.

by **pvisseriii** » Thu Jul 12, 2012 7:46 am

Anglophile wrote:I've got the original WM2 rims front and rear with Avon AM26, 100/90-19. They've been doing well after 2,000 miles of recent road use. The rims don't feel "thin" even at 75mph.

Yes, I had that tire on my stock WM2's also. Never an issue and much improved over the stock Dunlops. I made up a set of WM3 Excel's from Buchanans, kept the tires the same, and they still bitch at me.
To thine own self be true.

by **mark99** » Thu Jul 12, 2012 8:30 pm

just verifying, you have 19" WM3s front and rear and no fit issues? I have gotten mixed input on fitting a WM3 to the front
I am leaning towards the rear 18 WM4 and 19 WM3 if I know for sure it will fit and I can get the 18 for the MK3
Thanks

by **JimC** » Thu Jul 12, 2012 8:35 pm

I refer you to the post from Matt Ranbow of CNW:

CNW wrote:Hey,

It is more important to go with the tire manufacturers recommendation in regards to size on the rim. This to ensure that it gets seated properly and doesn't balloon to alter the footprint. Older type tires have a huge sidewall compared to modern Metric type tires and the two types certainly have different recommendations when it comes to rim sizes.

JimC suggestion for sizes are spot on. A wm3 in the front for a 100/90-19" and if you go with a wm4 or 4.5 in the rear, then a 110 or 120/90-18" will be perfect. These two tires sizes will have the same, or very close to the same, rolling diameters (since the wider rear also gets taller). In other words, as far as the bike knows...you are spinning the same tire sizes.

Staying with the 19" rear does certainly limit the tire choices as a 19" rear is pretty much an obsolete size as far as the tire manufacturers are concerned. Few good tires are available and one is an Avon AM26 Roadrider that can be mounted front or rear by simply reversing the rotation. If you ran a 100/90-19" front and rear...then I would use a wm3 rim for both.

I would recommend an alloy rim for your wheel set. Light weight, strong and looks great. Go with some stainless steel spokes and nipples. Go with Buchanans. They offer some great product and stand behind it 100%.

Of course, opening the door to the 'wheel and tire recommendation' will definitely get you plenty of different advice, just like when starting and 'oil' thread.

Matt / Colorado Norton Works

by **CanukNortonNut** » Fri Jul 13, 2012 6:42 pm

Well I will throw my wrench into the mix. :shock:

I took some advice from Fullauto who mentioned that he was running WM-4 rims front and back with the 19" AM-26 universals. Well I think we are the only ones using this combination tire and rim on a Commando and I couldn't be happier. I got a lot of raised eyebrows from the older britbike guys including Mike at Walridge Motors where I bought them along with the stainless spokes but it fits up nicely on my 74 Interstate between the front forks with no clearance issues. I couldn't get the rims in the shouldered style in aluminium but I like the looks of the Morad rims. And it doesn't catch the dog pee in the valley of the shoulder, as Ken would say. :mrgreen:

Cheers,
CNN

by **Fullauto** » Fri Jul 13, 2012 8:26 pm

Yep to that and if we are looking at manufacturers recommendations, then Avon say that the 100/90 AM26 Roadrider is made to be fitted to a WM4 (2.5") rim. They say that suitable alternatives are 2.15" and 2.75". Mind you, they also recommend the same tyre for the standard 1.85" rim as well.

I can honestly say that with the 2.5" rim and Avon 100/90 combination you will not find a finer steering/ handling combination. Of this I am quite sure. I've tried to talk Matt at CNW into doing just one set of these wheels but he hasn't............yet.

by **mark99** » Sat Jul 14, 2012 3:32 pm

Hi CanukNortonNut

If you where going all different on the rim width, why didn't you get an 18 for the rear?

by **Brooking 850** » Sat Jul 14, 2012 5:19 pm

Hey Canuk and Fullauto, any cance of some pics of your tyre & rim set up showing fork and swing arm clearance as I am looking at option s for Bike #2
Regards Mike

by **CanukNortonNut** » Sat Jul 14, 2012 8:05 pm

Brooking 850 wrote:Hey Canuk and Fullauto, any cance of some pics of your tyre & rim set up showing fork and swing arm clearance as I am looking at option s for Bike #2
Regards Mike

Mike
I will see what I can do for you. I will take some pictures tomorrow in the daylight. I will have to relearn how to use photobucket.

I still don't know how to do an avatar pic. :oops:

Dumb as a stick when it comes to computers. :roll:

LOL
Cheers.
Tom
CNN

by **Brooking 850** » Sat Jul 14, 2012 8:16 pm

Appreciate it , if you can't paste here, send your pic's to neptechvtu@yahoo.com.au
Regards Mike

by **CanukNortonNut** » Sun Jul 15, 2012 2:36 pm

mark99 wrote:Hi CanukNortonNut

If you where going all different on the rim width, why didn't you get an 18 for the rear?

Hi Mark
I like the Avon AM-26 as a tire for the Commando and by sticking with the 19" profile both front and back, I then use only one tire when the rubber wears out. Its always the back that wears the most.
As Fullauto pointed out to me, when the rear tire has worn out, you switch the front tire to the back rim and place the new tire onto the front rim. You mix match rim sizes and you don't have this as an option.
Regards,
Tom
CNN

by **CanukNortonNut** » Sun Jul 15, 2012 2:54 pm

Brooking 850 wrote:Appreciate it , if you can't paste here, send your pic's to neptechvtu@yahoo.com.au
Regards Mike

Ok Mike
I took some pick and hope they show up. Let me introduce my 74 Interstate. Choo Choo Moma.

Starboard side

Port side

front wheel. Yes its a WM4

rear wheel

rear shot looking down chain guard to swing arm.

swing arm shot on timing side.

gap at front wheel slider attachment and fender support.
Cheers
CNN

by **Brooking 850** » Sun Jul 15, 2012 3:03 pm

Thanks CNN perfect
Regards Mike

by **cjandme** » Sun Jul 15, 2012 7:23 pm

+1 on the thanks for photos......I'd seen fullautos post before about WM4's front and rear and filed it away in my brain for my wishlist of stuff for my bike. I really like the idea of moving the front tire to the rear when the rear tire wears out and putting the new one on the front. Keeps the fresh rubber up front.

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