Avon AM26 tire sizes for MK3

Status
Not open for further replies.
Joined
Aug 25, 2008
Messages
134
Ready to upgrade from the TT100's. I have decided on the Avon AM26 but I am not sure what size to run on the front wheel. The rear will be the 100/90 and I would like to run the same tire at both ends if possible. Will the 100/90 fit into the stock front fender or do I HAVE to run a 90/100 up front?

As always thanks for the help.

Cheers
Andy
 
Going by tire conversion charts a 100/90 should be no problem. Let someone else chime in though.
 
Great tyres. I run them both ends on my MK1 850. When the rear is done, the front goes to the rear and the new one goes to the front. Steering is beautiful.
 
Hi Andy,
What size are your TT100s, mine are 4.10x19 front and rear. 4.10 converts to 104mm so a 100/90 should fit. I don't know if you have a supplier in mind for your Avon tires, but I'd like to recommend www.americanmotorcycletire.com if you click Avon then AM26 on the bottom of the second page they list 100/90-19 front or rear use for $85.

GB
 
OK thanks everyone. AM26 100/90 on both ends it is. I wish I had given more thought to the tire situation BEFORE my last trip but oh well. I can almost recall from memory every stretch of rain grooved freeway from here to Oregon!!!!! What a pisser.
 
100x90 19" is definitely the way to go, plenty of patch area yet light mass for easy thoughtless direction changes ballerina like, plus can use up front center tire by switching its rotation direction on rear 19" rim. 110x90 fits under factory mudguard.
 
100/90 rear 90/90 front on mine.
It does turn faster with the narrower front although have seen some comments about the front feeling less planted in a straight line.
Smaller front also good if you run a CNW type front guard - i do.
 
90/90 front and 100/90 rear on WM3-2.15 Akronts on mine.
Cannot compare with 100/90 front though. Swapping feature is interesting.
Present setup somehow gives me confidence in corners.
Scraped (not really intending it...) the sidestand on a few roundabouts some time ago, the Roadriders did not loose their grip.
 
Brian Tryee in the '70's was so annoyed by rain grooved freeway commutes he put on the first ever rod linkage on the front and rode happy ever after on 90x90 tire. Front link is the simplest to do, nil tear down unless doing it the hidden down below way JIm Comstock has. But beware a narrow tire and front link will up the speeds stable in sweepers before hinged handling hits even harsher with less warning.

There's a good bit of jostling from forks through rubbery chassis following road texture that a front link takes out but not considered is an annoyance till you feel the nice improvement. Head steady takes out the wind buffet jostles not noticed much till it ain't there no more. Hinged handling still lurks though until rear linked. Then its uncanny fun to cross bad textures hardly noticing.

Except for faster tire wear, narrow is best to enjoy Commando ease of flow.
 
Commando75 said:
Ready to upgrade from the TT100's. I have decided on the Avon AM26 but I am not sure what size to run on the front wheel. The rear will be the 100/90 and I would like to run the same tire at both ends if possible. Will the 100/90 fit into the stock front fender or do I HAVE to run a 90/100 up front?

As always thanks for the help.

Cheers
Andy

Hi Andy,

I put 100/90x19 AM26 front and rear on my '72 750 at the beginning of this season. Prior to that I had a 90/90x19 front. I wasn't sure if the 100 would fit inside the narrow '72 front fender, but it worked... about 1/4" clearance to the fender stays. On your 850 the fender is wider...no problems. I don't care for the "quicker" stearing of the 90 size. It feels like it's falling over. I've run TT100, Avon old type Roadrunner, Avon Venom and new Roadrunner and now like the Roadrider the best. The back does burn off in about 2500 to 3000 miles though.
 
I can concur that a 100/90-19 on a stock WM2 rim fits under the front fender, but if you are running a WM2 or WM3 rim I'm not sure if it will clear the fender stay.

Avon recommends a 2.50 inch wide rim, which would be a WM3.
 
I wore out a set of 18" Roadriders on the 86 GSXR; then I tried a set of Michelin 2CTs. I'm going back to the Avons; a better tire at a far lower price.
 
Sorry Ludwig, it's been a long day.
What I meant, of course, was the 100/90-19 on a 1.85" WM2 fits nicely. Avon recommends a 2.50 for the 100/90-19 which indeed is a WM4.

I don't know if the 100/90-19 on a WM3 (2.15") or WM4 (2.50") will still clear the fender stays. I apologize for the confusion.
 
I cannot figure out the logic in California freeway surfaces. Sometimes the grooved portion goes on for miles. Sometimes grooves only on overpasses. I have seen one area near Fresno that had five foot sections of rain grooves here and there! At the end of my 1600 mile trip this summer I hit a long section of rain grooves on S/B 85 near San Jose. By this time I was so sick of the dam things I just did lazy S patterns within my lane for miles. The cars gave me plenty of room and probably thought I was comming from a bar!
 
As I mentioned above I am/was quite satisfied with my Roadriders.
Just checked the bike for what to do on it this winter.
I knew rear tire was gone, but had a better look, was not happy with what I saw, see below.

Avon AM26 tire sizes for MK3


Avon AM26 tire sizes for MK3


Avon AM26 tire sizes for MK3


Avon AM26 tire sizes for MK3


Am puzzled so far what can cause this.
Have not noticed anything funny during riding.
Have seen it before on front tires but not on rear.
Suspension (25+ year Koni's)? Unbalance (was balanced by the tire shop)?
 
"Scallopping" such as that is normal, front and rear. I've had many tires do it.

Dave Moss, a suspension guru, attributes it to less than optimum damping. At the track, for a fee, he "reads" tires and in my experience his re-setting of a bike's suspension and tire pressures can improve tire longevity. Too much or too little damping on either side - rebound or compression - causes wear just before or just after the tread sipes. That's what your pics show. On a track tire, you'll see balled up rubber deposited in the wake of the sipes. It has to do with the tearing distortion torque applied at the rubber/road junction by acceleration on the rear or the decceleration on the front. I've seen the rate of wear change from session to session after he looks at tires, and when he re-sets air pressures and tweaks the pre-load or damping of the suspension units. I've seen those balls of torn/melted rubber go away and be replaced by a pattern of smooth ripples - that's what he's looking for. You can't replicate it on the street, the tires just don't get hot enough.
 
Hi Andy,
I have a 72 750 interstate that had TT100 410/19 front & Rear from new.
Ive now fitted 100/90 Avon ROADRIDER tyres front & rear & they are brilliant.
No more wobbling when riding along white lines & much better around corners.
I should have fitted them years ago.
The last chairman of the Norton Owners Club said the same thing to me after riding someones Norton fitted with them.
I cant praise them enough.

Cheers Don
(CEO Avon Tyres)






Just joking I dont work for Avon,
 
Status
Not open for further replies.
Back
Top