Why don't all rim brake rims have wear indicator grooves?
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Why don't all rim brake rims have wear indicator grooves?
Both my Giant Cypress and my Trek Verve came with rims with wear indicator grooves. However of the aftermarket rims I've been looking at, I don't think I've seen any that have them. Anyone have insight into why this is?
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Because for decades the risk of blowing out a rim due to pad wear has been thought to be the rider's responsibility. Maintenance and precaution stuff. It wasn't the job of the rim manufacturer to tell you when you wore out your rim. Andy
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are the aftermarket rims you're looking at nicer or cheaper than the rims that came on your bike? a wear indicator seems like more of a luxury thing.
more importantly, most people don't know what a rim wear indicator is, so I would not be surprised if most companies don't bother with a feature that everyone will ignore.
more importantly, most people don't know what a rim wear indicator is, so I would not be surprised if most companies don't bother with a feature that everyone will ignore.
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Check carefully for some small drilled divots instead of the grooves; there may only be one or two per side.
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I have them on my Bontrager rims and the divots do give peace of mind. I have over 40,000 miles on the rims and divots are still there. For the relatively small effort to create the divots, it offers much more in safety and peace of mind.
Same with tires. My Continental Gatorskins and Specialized Armadillo All Condition tires have wear divots. It's a great visual indicator.
Same with tires. My Continental Gatorskins and Specialized Armadillo All Condition tires have wear divots. It's a great visual indicator.
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Because most rims are replaced due to an accident long before they wear out?
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This is the greatest pro disc brake argument there is. Disc brakes do not in the end destroy high priced rims.
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are the aftermarket rims you're looking at nicer or cheaper than the rims that came on your bike? a wear indicator seems like more of a luxury thing.
more importantly, most people don't know what a rim wear indicator is, so I would not be surprised if most companies don't bother with a feature that everyone will ignore.
more importantly, most people don't know what a rim wear indicator is, so I would not be surprised if most companies don't bother with a feature that everyone will ignore.
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Ride or Pie?!: Measuring rim sidewall thickness
I've measured mine using the caliper and bent spoke method.
I've measured mine using the caliper and bent spoke method.
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When I do discard the threadbare rear, I move the front to the rear (thus getting yet another 50% of tire life) and buying one new tire (for the front.)
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I never saw rim wear indicators before machined brake tracks became fashionable. Machining the brake track removes material from the rim, shortening the useful life. Maybe the wear indicators are a CYA type of thing?
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. . . so long as sidewall thickness is .5 mm or more, there's some life left.
Most rims start at 1.4 to 1.6mm
=8-)
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
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This is consistent with my observations on several new rims and several worn-out rims. The dental thickness gauge, known also as a "crown thickness" or "Iwanson" gauge, is good for rim wear measurements.