[bikertim]

Was wondering what you folks have for advice on rotor size. I'm new to 29ers and am in the process of building up an On One Inbred. Are 160's okay for the wheel size, or should I upsize to the 185's? I'm going with Avid BB-7s.

Thanks!

 

[yr292]

Go 6"

Was wondering what you folks have for advice on rotor size. I'm new to 29ers and am in the process of building up an On One Inbred. Are 160's okay for the wheel size, or should I upsize to the 185's? I'm going with Avid BB-7s.

Thanks!

I have 7" F+R on my 292 and 6" F+R on my Rig. I don't notice any advantage in the 7".
On the contrary, I rather exchange the rear 7" to 6" due to too easy lockout.

 

[Padre]

Tim, how heavy are you?
How fast do you like to stop?
This makes all the difference in the world.

Personally, I'll only ride 7" rotors on my XC bikes and 8" rotors on my heavy trailbike. I'm 220lbs though and like to stop fast.

If I run 6" rotors, I glaze pads and SQUEEL on the downhills at about the 1/2 mile point.

 

[MtotheF]

yep

180# here. 6" rear, 7" front. the 6" i had up front would turn blue and glaze pads up a whole lot more than the 7" one does. on smaller wheels i can go 6" front and rear almost all the time with no problems, but the big hoops seem to eat brakes a little faster...

Tim, how heavy are you?
How fast do you like to stop?
This makes all the difference in the world.

Personally, I'll only ride 7" rotors on my XC bikes and 8" rotors on my heavy trailbike. I'm 220lbs though and like to stop fast.

If I run 6" rotors, I glaze pads and SQUEEL on the downhills at about the 1/2 mile point.

 

[Loki]

I was having the same delema.

So I went ahead and just got 6 front and rear, I figured if I felt like that wasn't enough I could get a 7 inch front rotor later.

 

[20.100 FR]

I started with 160mm, and went to the 180mm Front and rear.
I weight 82kg.

 

[bikertim]

Tim, how heavy are you?
How fast do you like to stop?
This makes all the difference in the world.

Personally, I'll only ride 7" rotors on my XC bikes and 8" rotors on my heavy trailbike. I'm 220lbs though and like to stop fast.

If I run 6" rotors, I glaze pads and SQUEEL on the downhills at about the 1/2 mile point.

I'm about 210lbs and do like crisp brakes, I'm leaning towards the larger rotors - also, it's a singlespeed, if that matters any.