Shimano R550 wear indicators.
Hi.
I looked at my front wheel and I notice on one side the wear indicator appears to be almost gone, which would indicate the wheels have reached the end of there life, thing is, the rims are hardly concave.
Would it be safe to keep on using them until they're pretty concave?
Thanks
Will.
I looked at my front wheel and I notice on one side the wear indicator appears to be almost gone, which would indicate the wheels have reached the end of there life, thing is, the rims are hardly concave.
Would it be safe to keep on using them until they're pretty concave?
Thanks
Will.
0
Comments
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I'm guessing the wear indicators are there for a purpose.....0
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Many years experience, keeping a close eye on the concavity and getting it wrong on 2 occasions. Both these only resulted in brake judder and a quick lowering of tyre pressure before riding home. I have also used a 'pointed' micrometer to measure the wall thickness. You need to do this in several places as it does vary. I changed the rim at 0.7mm.
As a rough guide 1mm concavity is worn out.0 -
John.T wrote:Many years experience, keeping a close eye on the concavity and getting it wrong on 2 occasions. Both these only resulted in brake judder and a quick lowering of tyre pressure before riding home. I have also used a 'pointed' micrometer to measure the wall thickness. You need to do this in several places as it does vary. I changed the rim at 0.7mm.
As a rough guide 1mm concavity is worn out.
Are you saying if I put a steel rule across the rim and there is more than 1mm gap in the center it is worn out ? If so, I have a worn out pair of wheels.0 -
softlad wrote:I'm guessing the wear indicators are there for a purpose.....
It was a sensible question.
My R550's are hardly concave, yet my Open Pro rims are pretty concave, and apparently open pro rims have a hole appear in the rim when they wear out, and that's not happened yet.0 -
Are you saying if I put a steel rule across the rim and there is more than 1mm gap in the center it is worn out ? If so, I have a worn out pair of wheels.0
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These were a pair of Mavic Cosmos wheels that I used with standard Shimano pads. Living in the same area as you you will appreciate the use of brakes, I tend to use mine a lot. I now use Koolstop pads and after 2 seasons my Shimano 550s are showing no sign of wear. I've binned the mavics after 1 season, I cried.0
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or get a trekking rim for winter. thicker in all the right places and not too heavy.0