New tyres for my 72 Commando

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Since we on tires .... what PSI you all running in the TT100, K81 , thanks
 
I had them at 28# last I checked a week past. They're holding well....at least my tubes are. Any lower and one of our numerous potholes may sneak up and take out a rim while I daydream.
 
Golly, you guys are making me worried about my K70's I 've had on my 850 since acquiring bike a year and a half ago. Seem to be holding up ok after nearly 5k miles.
I've had Avon RoadRiders on my modern Bonneville and they were quite good. I do recall a few rear end squirms going over white road paint and manhole covers in the wet but this was also while negotiating city corners and I was still learning how to ride.
The Bonne now has dual sport rubber Shinko 705's and these do very well in light dirt roads and wet pavement. I think the K70 deep tread blocks also work pretty well on loose gravel roads and may give some advantage if you hit sand or debris in a corner compared to a moderately slick tread tire?
 
Well, I've just bitten the bullet, my rear is about at it's end and the front is getting on a bit. Just ordered a pair of roadriders off fleabay £138, so will give them a whirl. Only tried the roadrunners once then back to the TT's. New rubber for a old sole ! Here's hoping.
 
Tornado said:
Golly, you guys are making me worried about my K70's I 've had on my 850 since acquiring bike a year and a half ago. Seem to be holding up ok after nearly 5k miles.
I've had Avon RoadRiders on my modern Bonneville and they were quite good. I do recall a few rear end squirms going over white road paint and manhole covers in the wet but this was also while negotiating city corners and I was still learning how to ride.
The Bonne now has dual sport rubber Shinko 705's and these do very well in light dirt roads and wet pavement. I think the K70 deep tread blocks also work pretty well on loose gravel roads and may give some advantage if you hit sand or debris in a corner compared to a moderately slick tread tire?
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I think your k70s are ok I believe they are made in a better compound than they were 40 years ago
 
5,000 miles on a rear K70? I was never able to get more than 3,500 miles out of them on a Commando.
I ride Roadriders now. Same mileage but better handling.
 
CanukNortonNut said:
I too have been installing Road Riders's I also use the 19X 2.5" wide rims that Avon recommends. Couldn't be happier. I have road with this combination for over 50k on my Interstate.
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Not so fast, Avon now approve the WM2 for the 100/90 - 19 Universal. The constant badgering of them seems to have got across to them, seems it was just an oversight after all these years.
 
Madnorton said:
Not so fast, Avon now approve the WM2 for the 100/90 - 19 Universal. The constant badgering of them seems to have got across to them, seems it was just an oversight after all these years.
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You a funny guy MN.
The FA guy was like a broken record over this subject, it went on and on so I got me some of those wide rims at $1300 but they sent me 18's instead of 19's so I sent those back for replacement, then I got some radial Continentals @ $500 but the genius's at that joint sent two front tyres and now you are saying it was typo ? :D
 
TW you didn’t waste your money. Avon say they’re OK for the narrower rims, but still ideal for the wider ones.

They give an ideal width, then a min and max that is OK or acceptable.

They are designed to work on the wider rims you have bought.
 
Madnorton said:
I believe the Classic attack does not, as I can't find any reference to it in the race attack options.

The classic attacks can wear quickly, but the TWI seems to be very generous also still experimenting with pressures, which at the moment seems to suggest that Conti have massively underrated the tyre loading capability. I will use again, yes they are slim though but construction is very good, but I suspect that the others will catch up construction wise in the very near future making Radials the norm.

Having used Roadriders for over 10 years, these are just better all round, though they look too narrow, top picture just fitted, and some say get too hot, but they can't be as you can keep your hand on them.

View attachment 12015

View attachment 12014
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Probably because you are runnning the Avons on the wrong rims. The fact that Avon now recommend the 100/90 Road Riders for the 2.15" rims seems like a bit of belated marketing wank. Put them on the correct width rims and they are a different tyre, Superlative.
 
Time Warp said:
You a funny guy MN.
The FA guy was like a broken record over this subject, it went on and on so I got me some of those wide rims at $1300 but they sent me 18's instead of 19's so I sent those back for replacement, then I got some radial Continentals @ $500 but the genius's at that joint sent two front tyres and now you are saying it was typo ? :D
Click to expand...

Yes. And then you f***ed it up by buying different tyres. A bit hard to say I was right or wrong if you do that. They may or may not give good results. Then it will be my fault I'm sure.
 
Confusion, no - Avon now specify in their latest online information you can also use the 100/90 - 19 Universal on a 1.85'' WM2 rim - FACT, look it up yourselves. So, after all these years, over 10, those that have fitted the Avon Roadrider as per the old UK Avon fitment guide had nothing to worry about it seems. If you changed your rims to 2.15'' in the past 10 years to fit Roadriders, ring Avon and ask for an apology.

The rim size tyre fitting policy is laid out for Europe only in ETRTO guidelines, yes an organisation run by manufacturers for the manufacturers. So a specific tyre can fit a variety of rim widths, and maybe or maybe not rims types irrespective of the width.

So it seems that I have been using the correct tyre on the correct rim all along, and I'm two rims and two wheel builds better off.
 
I had considered going back to the K81 rear and Avon Speedmaster that my 74 850 came with after seeing all of the "you need a wider rim" posts here. I'm relieved that the AM26 is acceptable on a WM2 rim now - so thanks for this.
 
Sure will. It was posted on the NOC forum by a German owner who found the link. He was not convinced that a Conti would fit, but was happy to fit a Roadrider, even though I pointed out it also was also not specified for a WM2 - he proved me wrong with a link to the Avon documentation.
 
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