A forum for owners of Yamaha TTR250 trail and enduro bikes!

admbnm · Veteran Member

tyre compatibility

peteBLUEttr · Super Guru

A 4.10 will go on the TTR's 2.15 rear rim fine.

You want k60's because of the long life do you?

Moo · Senior Member

The 4.10 is a smaller size than the 4.0 or so i've been told, as its a different ratio.

You can get 4.0 Heidenaus though, i've just ordered a new one. I'm running a 90/90/21 Heidenau K60 up front too if that helps with sizing. Really like these tyres!

admbnm · Veteran Member

thanks for the info,i was thinking of the k60 as i use my bike on mostly country/unclassified lanes,i saw them on the recent load carrying thread,did a search and very good reviews,my understanding of a 4.10 size should be inches across the tread and as there is no profile number it should be 100% by default,the tyre code charts are as clear as mud regarding 4.10.prob easier to order a metric tyre,martin,

admbnm · Veteran Member

after a trawl through the web it seems that in the usa tires are sometimes marked diffrent. 4.10 means 4= 4 inches of widest tread and the.10 is a profile % so a 4.60 and 4.10 are the same width,diff height.

Moo · Senior Member

I'd heard that the 4.10 is more like a 3.75 tyre. Its been a few years since I experienced it (buying tyres for a Honda superdream..) but I do remember them being weirdly different.

I thought a 4.10 is 90% profile so its smaller than a 4.00

EDIT: For reference, scroll down a bit and it lists the nearest mm size http://www.wemoto.com/info/tyre_information/

-- Edited by Moo on Friday 6th of November 2015 06:06:09 PM

peteBLUEttr · Super Guru

It will have a 90% aspect ratio so the height will be around 90, 100/90-18.

I would be tempted to buy a Mitas E-07 120/80-18.

admbnm · Veteran Member

i have bought online via pneus online a pair of k60's in 3.00-21 and 120/90-18., now to dig out my tyre levers.martin

-- Edited by admbnm on Monday 9th of November 2015 09:18:19 AM