Just a heads up to those with high milage steeds. I saw an image lately of the aftermath of having too thin a front disk. I often wondered why the disk carrier had a disk minimum thickness stamped on them (4.5mm) They should still get rid of the heat ok I though. The image showed the disk not just buckled (funny word that) but radically so. The thin disk had "gathered" behind the caliper, being at dead right angles for about 50mm. Hello bitumen!! And Mr Ambulance man.
If you are a heavy braker, a special heads up.

Saturn 5

Just a comment, I replaced the disks on my K6 (all three of them) @ ~100,000k's.

Thickness was a little low, but when I pulled them off, one of the fronts had a DEEP groove worn on the inside and was probably down to around 2mm in that spot - so don't just measure them, have a VERY good look - and not just at the outside.

Pete

Everytime I change my tires I check both sides of them.At 50,000 miles all I found were slite groves..


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1982 GS850..BLACK SUNSHINE,the tripod
2007 DL996AR..BRUTUS
Ah screw it,I'm goin ridin !!!!!!!!

Added to my check list...

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Doug in Kentucky (Semper Fi)
Live in the moment, for only the moment is real.
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2007 Wee-Strom
2009 Suzuki Burgman 650 Executive
2001 Honda Helix (Sold)
1980 Honda Express (my toy!)

Anybody know what the new thickness is?
I checked mine a couple of weeks ago and at 40,000km all three are at 5mm but I don't know whether or how much they have worn since new.

I'm pretty sure the new thickness is 5mm. Wear below the limit is very rare unless racing pads are used.

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Pat- 2007 DL650A was ridden to all 48 contiguous states. 2012 DL650A is just getting started.
Nicknames for posting ease on my part, Vee = all DL1000s. Wee = 2004-2011 DL650s. Glee = 2012+ DL650s

Thanks. Historically Japanse brakes have virtually non existent rotor wear unlike European ones where the rotors wearing is an integral part of the braking process.

I checked to make sure. The standard thickness is 5.0mm and the wear limit is 4.5mm.

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Pat- 2007 DL650A was ridden to all 48 contiguous states. 2012 DL650A is just getting started.
Nicknames for posting ease on my part, Vee = all DL1000s. Wee = 2004-2011 DL650s. Glee = 2012+ DL650s

As you say unless somebody runs really aggressive racing pads or ends up with deep grooves from stones being caught in the calipers I can't see rotor wear being much of an issue on Stroms.

The easiest way to check is to feel the outer edge of the rotor. If there is a lip then the rotor is wearing, no lip means no wear. Running your fingers over the inner and outer surface will test for groves.

That was not my experience. My rear was down to 4.2xmm (well below the limit) and the fronts down to 4.65. Granted, the bike had 32K on it when I bought it so I can't vouch for it's early life, but it's got 53K mikes on it now, and I am NOT hard on brakes. The rear is being replaced and the fronts reground, but I will look to replace them within a year too. A V-Strom will wear a rotor as well as any other bike in my experience, depending on braking habits and yes, pad choice.

Yes, my rotors were a good example of this. The 'swept' area of the rotor is very slightly less then the entire machined surface. A ridge is definitely an indicator of wear. NOTE!! If you pull out your micrometer to measure these, you must measure in several spots, closer and further from the hub. It will vary, and the thinnest spot is what you should go by when considering wear.

N.

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Nils Menten - Santa Cruz, CA, USA

R1200GS, DL1K, R1100S, CBX, DRZ, KLR
I have a motorcycle problem.