I've read about cupping on the HD's. Is this an issue with all HD bikes? My 09 SG has cupping on the rear tire. Is there something that can be modified or improve to reduce this problem?

TIA,
MJ

 

Same here. My 07 always wore evenly. Don't know why the 09 is cupping.

SugsPa

 

Tire pressure. If you let it get low a few times it will show up as cupping as it gets some wear. Assuming ballance, wheel bearings, and alighnment are good

 

My 10 is cupping also. Crappy dunlops. Ive had them on other bike and have had the same problem. Next tire for me will be metzlers.

 

I got www dunlops.....over 10k on the front...no cupping. I keep the pressure in them up.

 

I bought my bike use so there is a good chance tire pressures were not maintained. I run 40/40

 

The new dunlops are dual compound and last longer. The center tread is harder and outside treads are somewhat softer for handeling. IMO this causes the cupping and noise in the corners. I'm on my 3rd rear at 57K, getting about 18-20k per tire. I can live with a litttle noise for the extended life, doesn't effect handeling. I've always maintained 40psi rear and 36 front.

 

i got 7800 on my 2011 road glide rear cupping bad, but i only keep 36 pounds in it ,front tire still looks new . dealer told me to put 42 in it , but its to late now.

 

If you run 4lbs. over your correct pressure, you can get rid of a lot of cupping. Try 44 psi.

 

CUPPING is usually not being consistant at checking and keeping your tires inflated at least to the max presure ""listed on the side wall"" of your tire.
" Note if your not running stock tires the recomended presure in your manual might be WRONG ."
Also spend some bucks for a QUALITY Air gage , check and ajust frequently .
Your bike will handle better be safer and tires last longer.
I run mine 2lb over max listed on side wall .
42LB REAR 40LB FRONT .

The 402 is an ok tire ,many others are better ,
I got 11,000 miles out of my rear 402,NO CUPPING .
I replaced it with a e3
I still am trying to wearout my front 402 with 15,000 miles so far . NO CUPPING !

You will find that your riding platform will be more stable with firmer tires also run your air shocks firmer than the manual says will help tire milage .your bike will ride/track better .
This means a safer ride .
I run my air shocks 24lb solo 28lb two-up . This will vary depending on your weight ect .
Make sure you have the HD air pump or simaler quality no loss air pump and check you shock presure frequently and ajust for load.

Remmember older bikes shocks have diffrent max air load than the shocks on newer bikes .
Also newer bikes have wider rims take theses diffrences into acount when readin advice here on the forum .


MOST INPORTANT !Try to avoid being" The Princes and The Pea Guy" who wines about feeling the road cracks when your tires are inflated properly.