This pix is an extract from this website and is for reference purpose for this discussion only:
http://www.rattlebars.com/valkfaq/tirewear/index.html
I will remove it if there is any problem...
Here is Dunlop' FAQ on tire cupping:
http://www.dunlopmotorcycle.com/infocenter_faq.asp?id=9
Have to say, on my Sporty, I do like the Dunlop tread pattern as it performs on rain grooves...it tracks well with no wobble or vibration...the stickier Metzelers did feel a bit "vague" and wandered a bit over the same rain grooves.
Only time I saw cupping was with the old model K291 Elites back in the 80's...you would run your palm lightly along the tire center patch area and feel the cupping was almost 1/4" and the bike (it was on my friends Yamaha Maxim I 650cc bike) would "sing" and judder down the road at certain speeds badly when he rode the bike on the freeway.
http://www.rattlebars.com/valkfaq/tirewear/index.html
I will remove it if there is any problem...
Here is Dunlop' FAQ on tire cupping:
http://www.dunlopmotorcycle.com/infocenter_faq.asp?id=9
Have to say, on my Sporty, I do like the Dunlop tread pattern as it performs on rain grooves...it tracks well with no wobble or vibration...the stickier Metzelers did feel a bit "vague" and wandered a bit over the same rain grooves.
Only time I saw cupping was with the old model K291 Elites back in the 80's...you would run your palm lightly along the tire center patch area and feel the cupping was almost 1/4" and the bike (it was on my friends Yamaha Maxim I 650cc bike) would "sing" and judder down the road at certain speeds badly when he rode the bike on the freeway.