The green machine CT1B needs new tyres and I'd like to keep to the original style block pattern.
I believe the correct sizes are 3.50 18 rear and 3.25 18 front.
The rear is not hard to find but I can't source the front with the original style block pattern.
The CT1C I have has Kenda K262 3.50 18 rear and 3.00 18 front which I know is wrong but I suspect the previous owner has the same problem finding a 3.25.
Has anyone managed to source a 3.25 18 front?
I'm in the UK.

www.tyreleader.co.uk/motorbike-tyres/heidenau/k67/

The K67 is a favorite

Do a search here on the forum for " Heidenau "

I think the 18 inch front wheel is the challenge...

I thought someone had found some repop Cheng Shins or something recently?

Check out post #11 at this link... not "technically" original sizes but look pretty good to me. Problem with the tire sizes is that they aren't that accurate... one manufacturer's 3.25 might be like a 2.75 in another brand... or a 3.50.

yamaha-enduros.com/index.php/forums/gene...-tire-thread?start=0

Sorry thought Heidenau came in 18 inch

I like the K67's, I put them on my RT1 and they look and feel great, but I don't think they do a 3.25 18.
I might put my CT1C wheels on it temporarily (they are waiting for me to rebuild the bike) and see what I think of the 3.00 18 front and how it looks, will post some pics with them on.
I did like the look of the CT2 in #1 with the 4.00 rear and 3.5 front.
I'll add to the Master Tire Thread when I get it sorted, thanks for the help, I didn't know the Master Tire Thread was there.

This is interesting (or not), evidence of the variations in the same spec tyre from different manufacturers.
I measured the below tyres and these are the sizes:

Original Dunlop Trials Universal 3.50 18 width 88.8mm
Original Dunlop Trials Universal 3.25 18 width 84.5mm
CST 3.50 18 width 85.8mm
Kenda K262 3.00 18 width 77.3mm
Heidenau K67 4.00 18 width 107.8mm
Heidenau K67 3.25 19 width 88mm

I think based on this I'm going to try the Kenda 262 in 4.00 for the rear and 3.50 for the front as they seem to come up a bit slimmer than the Dunlop in the same size.
If it works out I'll post the info in the Master Tire Thread.