Bridgestone Cupping Problem

[LDD]

Folks
I'm on my second set of OEM Bridgestones and the cupping has started again around 4000 miles on the rear tire. I got about 11500 out of the first rear tire with the same issues. My tire pressure is good. I do have a Givi V47 on the bag and "necessary" road gear in the side bags but not a great deal of weight. Very seldom ride two up. Any ideas before I hunt for a new brand of tire.

Thanks

 

[nm6r]

How bad is your tire cupping? Some cupping is normal wear. Here is a good read on the subject.

Ray

 

[WeeSTer]

How bad is your tire cupping? Some cupping is normal wear. Here is a good read on the subject.

Ray

I have had some cupping on all tires and also put it down as normal wear.
I got almost 15K kms out of the original 020's and although there was some cupping on the sides, they still handled well until I replaced them with the
021's.

 

[LDD]

I've never seen cupping like this from normal wear on a bike. All the cupping is not on the centerline so the bike tens to ride fine on a line. I owned a HD Sportglide (FXRT) for 19 years previously. Same basic load, weight and layout. Always ran Dunlops (491s and 591s) with no problems and about 12000 per tire and I don't run them below about 4/32 of tread.

 

[LDD]

And that's what I thought my have happened on the first set as I rode about 3600 miles in two weeks on a cross country trip and only checked pressure before I started. This second set has identified a trend. Don't believe I'm riding the tires that hard.

 

[saaz]

On the ST11 side cupping on the rear seems to be a common thing. I have tried 4 different brands and same issue.

 

[LDD]

Thanks. At least I'm not alone.