BSA Owners' Club Workshop Discussions

The BSA Workshop => Singles => Topic started by: DAVE BRADY on 22 Feb, 2025, 17:38

Title: what tyres?
Post by: DAVE BRADY on 22 Feb, 2025, 17:38
Hi,

The 17" rim size on the C15 limits tyre choice a bit so what are people using these days?

Dave.
Title: Re: what tyres?
Post by: Catz on 23 Feb, 2025, 11:30
On my A10 i'm using Avon RoadriderII and they are available in 17" size, though the A10 has 19" rims front and rear.
Can't fault them on my A10.
https://www.avontyres.com/en-gb/tyres/roadrider-mkii  Scroll down and over page for fitments.
Title: Re: what tyres?
Post by: DAVE BRADY on 23 Feb, 2025, 13:08
Hi,

Thank for the reply.
I use the Avons on three twins and they are good.  The 17" sizes are unfortunately too wide for the C15.
3.25 width is fitted to both ends which I recon are equivalent to a 90/90 in modern sizes.
Not a lot smaller, but does anyone use a 3.00 tyre on the front of a C15? 

Dave.
Title: Re: what tyres?
Post by: beesa71 on 23 Feb, 2025, 13:49
Dave,

These are as we've used and as a Dunlop K70 pattern tyre with modern compound are proving up to the job.

https://www.ebay.co.uk/itm/305170494613?

Regards.

Paul.
Title: Re: what tyres?
Post by: DAVE BRADY on 23 Feb, 2025, 14:09
Hi Paul,

I have looked at these and they do look the part. How do they perform in the wet?
I have found a Metzeler ME22 but in a 17" rim there seems to only be a 3.00 size available.  It is to be used on the front so the slightly smaller size should not be a problem.

Dave.
Title: Re: what tyres?
Post by: beesa71 on 23 Feb, 2025, 14:57
Dave,

Perfectly acceptable I'd say. As we know, a C15 isn't a race machine!

Go for it (them).

Regards.

Paul.
Title: Re: what tyres?
Post by: scifi on 24 Feb, 2025, 20:03
Are your rims marked with their width..?   You could have a WM2 front and a WM3 rear.   So 275 or 300 front, and 300 or 325 rear..  depending upon rider weight.
You will also need to adjust the pressures to suit the conditions.
Title: Re: what tyres?
Post by: DAVE BRADY on 24 Feb, 2025, 20:20
Hi,

Both rims are WM2 and a 3.25 tyre is specified for both ends. I have ordered the 3.00 for front fitment and will seek a 3.25 for the rear when it is needed.
The rims are bit tatty so I get the wheels I will consider having them rebuilt with 18" instead of 17" as there is greater choice tyres and it will only raise the bike by about half an inch.

Dave.