1973 Norton Commando 750 rear tire

possm · Apr 7, 2025

"The rider's manual specifies a 4.10-19 tire but there won't be clearance to the chain guard with a tire wider than the 100/90-19 (3.5-19)"

Over the years I have run a number of 410x19TT100's on Commando's without problem, clearance should not be a problem, are you running a chainguard? as Commando's run a narrow 5/8x3/8 chain called 10B, a 530 or 530H may rub on the chainguard.

MLW9110 · Apr 7, 2025

The Dunlop 4.10 - 19 K81/TT100 has a width of 4.17 in. I measured the Avon and it's close to that. That may be my only option but the tread is different than the Avon.

MLW9110 · Apr 7, 2025

possm said:
"The rider's manual specifies a 4.10-19 tire but there won't be clearance to the chain guard with a tire wider than the 100/90-19 (3.5-19)"

Over the years I have run a number of 410x19TT100's on Commando's without problem, clearance should not be a problem, are you running a chainguard? as Commando's run a narrow 5/8x3/8 chain called 10B, a 530 or 530H may rub on the chainguard.

I do have a chain guard.

possm · Apr 7, 2025

Yes I have just measured the 410x19 TT100 fitted to my 1969 Fastback which measures 4.13" inflated and clears chainguard etc

possm · Apr 7, 2025

The 100/90x19 Avon Roadrider on my Mk3 measures a fraction over 4.1" again inflated, as the Avon is more rounded profile fit a TT100 to the front and the Roadrider on the rear

MLW9110 · Apr 8, 2025

Got this in response to my inquiry I sent to Avon.

"The good news is that the RoadRider MKII range is still in our catalog, but production has been moved to a new manufacturing facility and we won’t see tires arriving until later this year."

concours · Apr 8, 2025

OP, be aware, the tires marked for front/rear fitment have less tread depth, (compared to DEDICATED rear tires) as shown in the previously posted charts.

About 4,000 spirited miles

1973 Norton Commando 750 rear tire

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