1970 Norton Commando 750 - looking for tires, what is recommended

Ken White

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Mar 31, 2019
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need help on recommended tires, my tires are good but old and am looking to replace with recommended tires. I just find confusing stats.
 
Most for all round riding Avon's RR are great, there is another thread going on about size, you can still ride with old tyres as long as they show no cracking or any other faults, why get replace tyres if there is no need to.
 
Show bike?
"Parade" ridden?
Or ridden in a spirited manner?

I PM'd you
 
Ken White said:
need help on recommended tires, my tires are good but old and am looking to replace with recommended tires. I just find confusing stats.
Click to expand...
If your serial number is less that about 141783 (frame mounted center stand), you need 3.00x19 Front, 3.50x19 Rear or the center stand probably won't get the rear wheel off the ground.
 
This has the sizes Greg said above. ‘69 Commando
1970 Norton Commando 750 - looking for tires, what is recommended
 
Yorkie said:
Does Avon make a tire for the 70 and earlier S-Type?
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The original front tyre would have been a 3.00 x 19 "ribbed" pattern, so yes...

Avon Speedmaster MKII - Avon Tyres

Official website. Avon Speedmaster MKII has a curved tread profile and ribbed pattern for classic bikes. All round improved grip with modern handling and stability characteristics.
www.avontyres.com www.avontyres.com

...the rear, was a 3.50 x 19 "GP" according to the owner's manual, so not exactly, although there is the 3.50 x 19 SM A MkII...

SAFETY MILEAGE A MKII

Classic rear motorcycle tyre.
www.avontyres.com www.avontyres.com

...also, 4.10 x 19 is listed for the rear in the brochures...
http://www.classicbike.biz/Norton/Brochures/1960/69NortonCommandoBrochure.pdf
...therefore, the 4.10 x 19 AM9 is the nearest Avon equivalent although it wouldn't have been available at the time.

Avon - AM9

The Avon Roadrunner AM9 is a Classic tyre offering riders a great value all-rounder for front or rear fitment. With modern compound & construction to enhance performance.
www.avontyres.com www.avontyres.com
 
3.50 x 19" GPs are available, but only in race compound. I fitted one to my '62 650ss when I first built it, as it was the tyre fitted to the bike from new. Less than 1,000 miles later it was bald! I then fitted a AM9 Roadrunner which looks similar & goes well with the ribbed SM front. This combination would also work well on an early Commando, but a pair of Roadriders would be better.
 
Road Riders for sure. Modern capability when out & about may save you one day from some other driver spoiling you and your bike to some extent.
Unlikely you are "hanging off" on the corners looking for that perfect time period drift of old style tires, and if you display at a bike show tell the "rivet counters" to go get stuffed.
Enjoy the ride.
Cheers
 
TheCounty said:
Road Riders for sure.
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For the rear, yes, but due to the narrower stays and tighter fitting "1970 Norton Commando 750" (thread title) front mudguard/fender fitted to the 'S' type and '70 Roadster, there isn't space for much more than a 3.00 section tyre unless the later ('71-) front mudguard and stays are fitted which is fine on a Commando with a Roadster etc. exhaust system but not one with 'S' type pipes because the mudguard can hit the exhaust as the forks compress.

Early 68/70 front mudguards and stays

Does anyone know the difference in all the different mudguard numbers on the early bikes, the 68 Commando (original Fastback) lists 06.0583 (export), the 'R' lists 06.0619A (chrome or dull), the 'S' lists 25542A, the 69 Fastback lists 06.0619A (same as R), and the 70 Roadster lists 25542...
www.accessnorton.com www.accessnorton.com
 
Re Road Riders, wouldn’t the 3.25 19 or the 90/90 19 be slim enough for the front ?
 
I have a 90/90 19 on the front of my '70 Roadster. Fits fine. Don't know about the 3.25 though. Now I'm curious if it would fit.
 
David B said:
I have a 90/90 19 on the front of my '70 Roadster. Fits fine. Don't know about the 3.25 though. Now I'm curious if it would fit.
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According to Avon, the 90/90 19 is 99mm wide and 647mm in diameter. Whereas the 3.25 19 is 98mm wide and 664mm in diameter.
 
Last edited:
Just checked, looks like the 3.25-19 is about 1/4 inch too large of a diameter and would rub against the fender stay bolt nuts.
 
David B said:
Just checked, looks like the 3.25-19 is about 1/4 inch too large of a diameter and would rub against the fender stay bolt nuts.
Click to expand...
A 90/90 should clear then? And would compliment a Roadrider rear too.

They do a 100/90 18 which looks like it would compliment the 90/90 19 well to me.

Check out the options inc size info here:

ROADRIDER MKII

Designed for motorcycles of all ages, the Roadrider MKII provides a step forward in performance and reliability over its predecessor.
www.avontyres.com www.avontyres.com
 
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