kreeper

Yes yes. I've read all the bashing of anyone that suggests they want to switch to disc brake systems in this forum. So I lay myself on the alter for your carving pleasure. However, please note that I live in Seattle, I ride steep hills daily, and very often in the wet. I find that my 215lbs is shredding pads with great haste, and I'm tired of making stupid faces while wondering if I am about to become one with the back of the bus that is stopped at the bottom of the hill I'm descending.

I'm not silly enough to rig a disc in the back where I don't need it and it just adds weight, but up front I'm willing to add the necessary grams to give me that confidence I want coming down steeper hills. I'm currently rigged with two year old Dura Ace stoppers (front and back), pinching Mavic CXP22 rims with Kool Stop pads (I use the salmons during the 9 month rainy season here). You may have an argument for a better rim (I agree), but please don't tell me I should have no problems stopping with my set-up. Yes it works, but only just, and I don't want to see the day it doesn't.

My question: I really like my 25mm Ultra GatorSkin tires, and don't want to go to a wider tire. Does anybody know of a good rim out there that is engineered to deal with the uneven torque of a disc brake, but is also made to fit a 25mm tire? It seems that most disc wheels are for cyclecross or MTB and recommend/require tires much wider. I don't want to use a rim for which the manufacturer doesn't recommend my tire size. This is from personal experience dealing with a failed rim that wouldn't be replaced because I was riding a tire outside the recommended size range by 3mm. Weight is still an issue as long as the value is there (i.e. I won't pay double for a rim that is only 15 grams lighter).

Other details: I'll be mating this to DT's 240s disc hub (32 hole), DT comp spokes, and avid bb7 road disc brake.

prathmann

I wouldn't expect any problems from using a regular road rim with disc brakes on the hub. I see lots of bikes on the market that have a variety of hub brakes (disk, drum, coaster, etc.) that still use rims designed with a braking surface. And tandems frequently have both a disc brake and a rim brake on the back wheel.

kreeper

is that to say that disc specific rims are pretty much marketing fluff?

Shimagnolo

"disc specific" only means the the side of the rim is not designed for rim brakes.
It is a limitation, not an enhancement.

kreeper

thanks fellas (or ladies)

mp123

To be fair it probably does allow a slight weight reduction in the rim but I agree it limits their functionality.

I've had good luck with 32 hole Mavic A719s laced to DT240s with disks on a wet weather frankenbike. Definetely not light but very solid and the disks stop great.

Retro Grouch 

Not really.

Some have curved or slanted sides that won't match rim brakes. Some just have painted sidewalls where the brake pads would wear it off.