Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 09-10-12, 09:20 AM   #1
Wilk
Junior Member
Thread Starter
 
Wilk's Avatar
 
Join Date: Sep 2012
Bikes:
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Larger front tire than the back?

I've been upgrading my rig and have started looking at tires. I've seen a few people talk about having a larger front tire than the back.

Just wondering if anyone has done this, or if anyone knows why some riders prefer it.

Cheers, Tom.
Wilk is offline   Reply With Quote
Old 09-10-12, 11:05 AM   #2
Raging_Bulls
Senior Member
 
Raging_Bulls's Avatar
 
Join Date: Apr 2012
Location: Antwerp, Belgium
Bikes:
Posts: 120
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The front has the hardest work when it needs to deal with the bumps, stones, edges etc. The wider and higher the tire there, the more it can take before the rim hits anything.
Also, wider tires tend to have a larger diameter as well, which means it'll roll over bigger obstacles more easily.

This "wide front and smaller rear" setup is a trend that's becoming more and more common indeed, but IMO that's mostly because MTB-ing is more about descents nowadays.
For climbing, you'd want the wider tire on the back and for old-school XC it doesn't really matter that much. XC bikes tend to have equal widths, or slightly wider at the back.
Raging_Bulls is offline   Reply With Quote
Old 09-10-12, 10:08 PM   #3
Thor29
Senior Member
 
Thor29's Avatar
 
Join Date: Aug 2005
Bikes:
Posts: 757
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've always run my tires either both the same or the front bigger. Doesn't matter whether it's XC, AM, or whatever. It just makes more sense to me since the front tire does most of the work. When you are going downhill it takes all the hits and does most of the braking. Also, I like fatter tires and I can't always fit them on the rear anyway - my hardtail 29er runs a 2.1 in the rear and a 2.3 on the front.
Thor29 is offline   Reply With Quote
Old 09-11-12, 08:05 AM   #4
ColinL
Two-Wheeled Aficionado
 
ColinL's Avatar
 
Join Date: Jul 2011
Location: Wichita
Bikes: Santa Cruz Blur TR, Cannondale Quick CX dropbar conversion & others
Posts: 4,905
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You get the most benefit from traction up front for cornering and braking, which everyone does, compared to climbing which is done less frequently especially in flat areas. The other thing to consider is that since the rear tire carries more weight, it gets more benefit from a tire with lower rolling resistance. The weight on the rear tire and acceleration applied to it wears it out much faster than your front tire, as well.

These two things are a big factor on some new bikes, especially Specialized since they have so many of their own brand of tires to pick from. It's normal to see a 2.2" front and 2.0" rear, with more aggressive tread up front.

I'm with Thor. I have more tire clearance up front than rear, so I'm limited to an honest-to-size 2.25" or slightly smallish 2.3" in the rear. I currently have Specialized Ground Control 2.3" front and 2.1" rear, but I can fit the 2.3 in the back because it's actually more like 2.2"... so I'll do that when I wear out my rear tire.
ColinL is offline   Reply With Quote
Old 09-11-12, 10:11 PM   #5
Dannihilator
User Title
 
Dannihilator's Avatar
 
Join Date: Oct 2002
Location: Annandale, New Jersey
Bikes: 2014 Surly Steamroller, 1989 Nishiki Altron
Posts: 19,419
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
On my dmr, the tire on the front is slightly wider than the tire on the back.

Front: 26x2.2 Maxxis Holy Roller
Rear: 26x2.125 Maxxis DTH

So basically, .075 of an inch.
__________________
Signature.
Dannihilator is offline   Reply With Quote
Old 09-12-12, 12:05 AM   #6
drhiii
Member
 
Join Date: Aug 2012
Bikes:
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Along in this tire discussion... I have a Trek XO1, Rolf Vector and 700x35. I want to switch tires for the moment until the weather turns squirrley and need the grittier cyclocross tires on there now.

Any reason I couldn't go with a 700x32 or 700x30 and tread of my choice for rolling better. I am about 90/10.... hard surface over improved trail.

tx
drhiii is offline   Reply With Quote
Old 09-12-12, 12:59 PM   #7
RIC0
PBR Racing
 
RIC0's Avatar
 
Join Date: Aug 2006
Location: Wifes $hit List
Bikes: Santa Cruz and Cannondale
Posts: 1,025
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've ran the same size up front and out back for 7+ years now.

Now i do like a more aggressive front tire than back.
RIC0 is offline   Reply With Quote
Old 09-12-12, 10:25 PM   #8
Daspydyr 
Pedals, Paddles and Poles
 
Daspydyr's Avatar
 
Join Date: Oct 2009
Location: Btw the Mohave desert and AREA 51
Bikes: Santa Cruz Tallboy, Ridley Noah, Scott Spark 20
Posts: 5,352
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
I prefer a larger, more aggressive broader tire up front. It holds better. A smaller rear tire also seems to allow me to slide the back tire around when I need to.
__________________
I think its disgusting and terrible how people treat Lance Armstrong, especially after winning 7 Tour de France Titles while on drugs!

I can't even find my bike when I'm on drugs. -Willie N.
Daspydyr is offline   Reply With Quote
Old 09-13-12, 12:50 PM   #9
max-a-mill
aspiring dirtbag commuter
 
max-a-mill's Avatar
 
Join Date: Oct 2004
Location: philly
Bikes:
Posts: 2,120
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
i think it is so the back tire will slide before the front.

think about it if one of your tires breaks traction you'd rather it be the back one right?

i always run a bigger more aggresive tread on the front.
max-a-mill is offline   Reply With Quote
Old 09-14-12, 07:51 AM   #10
Wilk
Junior Member
Thread Starter
 
Wilk's Avatar
 
Join Date: Sep 2012
Bikes:
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Makes sense to me now.

I have come from a trials biking community where our rear tires are always much larger due to always landing on the back of the bike. As of late I have become much more into mtb than before and gaining as much knowledge as possible from here. xD

At first I thought it was really strange to have a larger tire on the front but this makes much more sense.

Got a 2.35 on the back and a 2.2 on the front but it's time to upgrade the front anyway, so I may go larger.
Wilk is offline   Reply With Quote
Old 09-14-12, 10:44 AM   #11
roccobike
Bike Junkie
 
roccobike's Avatar
 
Join Date: Jun 2005
Location: South of Raleigh, North of New Hill, East of Harris Lake, NC
Bikes: Specialized Tarmac, Speialized Roubaix, Giant OCR-C, Specialized Stumpjumper FSR, Stumpjumper Comp, 88 & 92Nishiki Ariel, 01 Bianchi Campione, 87 Centurion Ironman, 92 Paramount
Posts: 9,441
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
I run a 2.25 on the front of the dually and a 2.1 on the rear both with tubes. I do this because most everyone else does and because I'll take any help that gives me more traction on the front.
The hardtail has 2.1 tubeless on both cause that's the way it came, I don't feel like messing with the tubeless and I've not had any traction problems.
,
__________________
Roccobike BF Official Thread Terminator
roccobike is offline   Reply With Quote
Old 09-14-12, 05:25 PM   #12
zerogravity
Trek DS 8.4 Rider!
 
zerogravity's Avatar
 
Join Date: Oct 2011
Location: Anaheim, CA
Bikes: 1991 Gt Avalanche, 2012 DS 8.4
Posts: 478
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I started on my DS 8.4 with a 700x38 fr/rr then 2.2/2.0. On my Rumblefish i have a 29x2.4/29x2.2 rear
zerogravity is offline   Reply With Quote
Old 09-14-12, 05:53 PM   #13
MC Hank
Banned
 
Join Date: Aug 2012
Bikes:
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Raging_Bulls View Post
This "wide front and smaller rear" setup is a trend that's becoming more and more common indeed, but IMO that's mostly because MTB-ing is more about descents nowadays.
Total crap.

Wider front tires have been the standard for decades. A wider front tire is beneficial while cornering on the flats as well on "the descents."
MC Hank is offline   Reply With Quote
Old 09-14-12, 07:50 PM   #14
Clem von Jones
Senior Member
 
Join Date: Sep 2008
Bikes:
Posts: 398
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
On 29'ers with suspension forks the already high front end will get higher with a larger tire. Just something to consider if you already have difficulty climbing the steeps.
Clem von Jones is offline   Reply With Quote
Old 09-14-12, 11:41 PM   #15
scrublover
Te mortuo heres tibi sim?
 
scrublover's Avatar
 
Join Date: Aug 2004
Location: East coast
Bikes: hardtail, squishy, fixed roadie, fixed crosser
Posts: 3,486
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Clem von Jones View Post
On 29'ers with suspension forks the already high front end will get higher with a larger tire. Just something to consider if you already have difficulty climbing the steeps.
If you already have trouble climbing the steeps, a little bit of extra height won't make it that much worse.

However, better overall traction might make things better. IMO, it's a technique thing more than anything else when climbing steep stuff.

Not all tires are created equal - just because it's wider doesn't always mean taller. I have actually grown to prefer a slightly wider rim in front, pared with the wider tire - spreads it out a bit more, but keeps it from being much taller. My current fav is a Stan's Arch or Mavic xm819 in back with a Flow up front. Works well.
scrublover is offline   Reply With Quote
Old 09-15-12, 12:13 AM   #16
Debusama
Senior Member
 
Debusama's Avatar
 
Join Date: Oct 2009
Location: Spokane, Washington
Bikes: Elephant custom road bike, 08 Redline D440, Motobecane Fantom cross Uno.
Posts: 681
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I run Geax Saguaro 2.2 front and back in late spring/early summer when things have mostly tried out but have not become crumbly and loose, and swap in a Maxxis Ardent 2.35 in front as things get sandy and dusty in the late summer and continue through the fall when it gets wet and sloppy. Mostly I like the larger, more aggressive tire up front for cornering. It feels to me like the combination of more aggressive tread and lower pressure that a high volume tire allows for make a big difference. The Saguaro 2.2 does fine on climbs, so I never bother to change it. It isn’t really a conscious effort to run bigger tires up front.
Debusama is offline   Reply With Quote
Old 09-18-12, 08:54 PM   #17
bikeme
Senior Member
 
Join Date: May 2001
Location: Sunny so. cal.
Bikes:
Posts: 442
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had always run the same size F and R but recently switched to a 2.3 Specialized Ground Control up front and keeping a 2.1 on the back. I found that I corner faster and more securely, roll over stuff easier and descend with more confidence. Amazingly, the 2.3 was no harder to push even though it is wider and a few grams heavier. I actually go faster with this tire. I'm a XC racer who keeps it on the ground--any air I get is incidental, lol.
bikeme is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 09:27 AM.