Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

185mm or 203mm?

Old 04-07-09, 05:54 PM
  #1  
Luke52
٩๏̯͡๏)۶
Thread Starter
 
Luke52's Avatar
 
Join Date: Jul 2008
Location: Melbourne, Australia
Posts: 502

Bikes: 2010 Giant Filter 1. 07/08 Apollo Independent.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
185mm or 203mm?

So I'll be upgrading my brakes to some Avid BB7's in near future, and as part of a deal the guy at the bike shop said he would throw in any sized rotors I want, free of charge.

I have 160mm rotors front and back at the moment, and I'm happy to keep a 160mm up back, but I would like to upgrade the front. I'm not sure whether to go 185mm or 203mm.

I'm sure 185 would be adequate for my riding (Mainly XC riding, a small hint of downhill every now and then, but nothing extreme) although a part of me is saying "Get the 203!" purely for looks. "Hey, look at my massive brakes, motherf***er!"

So opinions; Would a 203mm rotor really be overkill?
Luke52 is offline  
Old 04-07-09, 06:24 PM
  #2  
kmart
Blue Light Special
 
kmart's Avatar
 
Join Date: Sep 2006
Location: Bay Area, Sunny Cali
Posts: 1,467

Bikes: '05 Felt F55, Schwinn Prologue road bike, '86 Centurion DS Iron Man, Sette Flite AM MTB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Check the specs on your fork for maximum rotor size.
kmart is offline  
Old 04-07-09, 06:28 PM
  #3  
Luke52
٩๏̯͡๏)۶
Thread Starter
 
Luke52's Avatar
 
Join Date: Jul 2008
Location: Melbourne, Australia
Posts: 502

Bikes: 2010 Giant Filter 1. 07/08 Apollo Independent.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by kmart View Post
Check the specs on your fork for maximum rotor size.
That, sir, is a good idea.

Would the specs be written on the fork somewhere, or in the manual/online?
Luke52 is offline  
Old 04-07-09, 06:39 PM
  #4  
ca7erham
****** (can I say this?)
 
Join Date: Jun 2008
Location: CO
Posts: 1,900
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Prolly online manual. I'd personally go with 180's. If you ride with people who have 160's they look massive.
ca7erham is offline  
Old 04-07-09, 06:41 PM
  #5  
Luke52
٩๏̯͡๏)۶
Thread Starter
 
Luke52's Avatar
 
Join Date: Jul 2008
Location: Melbourne, Australia
Posts: 502

Bikes: 2010 Giant Filter 1. 07/08 Apollo Independent.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by ca7erham View Post
Prolly online manual. I'd personally go with 180's. If you ride with people who have 160's they look massive.
I've taken a look in the manual and online, and nothing.

The fork is a Mozo Vigor Q. The manual tells me to go to the website for further information, but the website doesn't even have Vigor listed under products. That's annoying.
Luke52 is offline  
Old 04-07-09, 06:43 PM
  #6  
born2bahick
Official Website Waterboy
 
born2bahick's Avatar
 
Join Date: Dec 2004
Posts: 3,271

Bikes: a lot

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Luke52 View Post
I'm sure 185 would be adequate for my riding (Mainly XC riding, a small hint of downhill every now and then, but nothing extreme) although a part of me is saying "Get the 203!" purely for looks. "Hey, look at my massive brakes, motherf***er!"
Sounds like a guy I know
born2bahick is offline  
Old 04-07-09, 07:03 PM
  #7  
ca7erham
****** (can I say this?)
 
Join Date: Jun 2008
Location: CO
Posts: 1,900
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by born2bahick View Post
Sounds like a guy I know
By any chance is he running 160's at the moment?
ca7erham is offline  
Old 04-07-09, 07:04 PM
  #8  
ca7erham
****** (can I say this?)
 
Join Date: Jun 2008
Location: CO
Posts: 1,900
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Luke52 View Post
I've taken a look in the manual and online, and nothing.

The fork is a Mozo Vigor Q. The manual tells me to go to the website for further information, but the website doesn't even have Vigor listed under products. That's annoying.
I just looked up the fork. Personally, I'd not go with the 203's, but thats just me.
ca7erham is offline  
Old 04-07-09, 07:20 PM
  #9  
cobba
Senior Member
 
Join Date: Aug 2006
Posts: 1,654
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
Mozo Vigor Q = a low end 83mm XC fork.

probably not recommended and not necessary to have a disc larger than 160mm.

Last edited by cobba; 04-07-09 at 07:24 PM.
cobba is offline  
Old 04-07-09, 08:31 PM
  #10  
Luke52
٩๏̯͡๏)۶
Thread Starter
 
Luke52's Avatar
 
Join Date: Jul 2008
Location: Melbourne, Australia
Posts: 502

Bikes: 2010 Giant Filter 1. 07/08 Apollo Independent.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by cobba View Post
Mozo Vigor Q = a low end 83mm XC fork.
probably not recommended and not necessary to have a disc larger than 160mm.
Yeah, that's the one.

Luke52 is offline  
Old 04-07-09, 08:50 PM
  #11  
merlin55
Senior Member
 
Join Date: May 2008
Location: SoCal
Posts: 1,246
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
larger rotors are more likely to snag a root or rock and get bent....my vote is 180 if you are heavy, I'm 175 ride XC and 160 rotors work fine
merlin55 is offline  
Old 04-08-09, 01:10 AM
  #12  
bikinfool
I have senior moments...
 
bikinfool's Avatar
 
Join Date: Oct 2008
Location: Woodside, CA
Posts: 2,151

Bikes: Many

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
From your riding description alone 160s should be more than fine, and seeing your fork details now, just go with 160.
bikinfool is offline  
Old 04-08-09, 01:22 AM
  #13  
Luke52
٩๏̯͡๏)۶
Thread Starter
 
Luke52's Avatar
 
Join Date: Jul 2008
Location: Melbourne, Australia
Posts: 502

Bikes: 2010 Giant Filter 1. 07/08 Apollo Independent.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by bikinfool View Post
From your riding description alone 160s should be more than fine, and seeing your fork details now, just go with 160.
Yeah, it seems like this is the better option.

Thanks for everyone's inputs.
Luke52 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.