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


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-07-11, 03:12 PM   #1
mr,grumpy 
Senior Member
Thread Starter
 
mr,grumpy's Avatar
 
Join Date: Jul 2009
Location: Boston Burbs
Bikes: Diamondback Sorrento, 1978(ish) Peugeot PRN10e
Posts: 780
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
What are 2.1 inch tires actually FOR?

A year or so ago, I got an old MTB (Ross Bryce Canyon) to leave at the in-laws up Maine. It came with some pretty fat tires, 2.1s (veloceraptors). Well, I finally got to take this thing out for a good spin today and besides needing a tune-up, I noticed that peddling this thing uphill. or on flat ground, on pavement or in the dirt, is like peddling through oatmeal! What are the general use for tires this wide, or was that just the fad back in the day when they made these things?
__________________
"I'm built like a marine mammal. I love the cold! "-Cosmoline
"MTBing is cheap compared to any motorsport I've done. It's very expensive compared to jogging."-ColinL
Rides:
1999-ish Diamondback Sorrento (I'm not Dead Yet! I feal happy. I think I'll go for a walk!)
1980ish Raleigh Marathon (Vintage Steel)
2007 Gary Fisher Advance (giving the Sorrento a break)
2006 Trek 820 (Captain Amazing)
2010 Specialized Tricross (Back in Black)


My little bike blog.
mr,grumpy is offline   Reply With Quote
Old 08-07-11, 03:26 PM   #2
chasm54
Banned.
 
Join Date: May 2010
Location: Uncertain
Bikes:
Posts: 8,657
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Fat tyres are good at absorbing bumps and dealing with soft surfaces - mud, sand and so on. And actually they roll pretty well, so if you are finding them hard going it is unlikely to be their width alone but their tread pattern. Knobbly tyres roll poorly on pavement or hard- packed dirt. Swap them for some slicks or semi-slicks.
chasm54 is offline   Reply With Quote
Old 08-07-11, 03:32 PM   #3
Steve B.
Senior Member
 
Join Date: Jul 2007
Location: South shore, L.I., NY
Bikes: Flyxii FR322, Soma Smoothie, Miyata City Liner, Specialized FSR Comp, Fuji Professional
Posts: 1,298
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 95 Post(s)
Fat tires give better float in soft dirt, which would be typical of trail riding in the woods. The knobbies give traction. Neither are useful on asphalt.
Steve B. is offline   Reply With Quote
Old 08-07-11, 04:08 PM   #4
pablosnazzy
Senior Member
 
pablosnazzy's Avatar
 
Join Date: Jul 2010
Location: fruita, co
Bikes: rocky mountain SLAYER!!!! trek, voodoo, surly, spot, bianchi, ibis
Posts: 1,702
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
2.1 are too big? we ride 2.4 tires, and when we want smaller, we ride 2.2 tires.

i guess i would use a 2.1 as a rear tire, because you want wide fat tires up front for traction and thin tires in rear.

2.1 isn't that large. it's all relative.

perhaps it felt like oatmeal because the bike needs a tuned up drivetrain.

Last edited by pablosnazzy; 08-07-11 at 04:11 PM.
pablosnazzy is offline   Reply With Quote
Old 08-07-11, 04:49 PM   #5
sknhgy 
Dirt Bomb
 
sknhgy's Avatar
 
Join Date: Aug 2006
Location: Illinois
Bikes:
Posts: 2,642
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 181 Post(s)
singletrack
__________________
more cops have been killed by donuts than guns in chicago it is a medical fact ask any doctor.
sknhgy is offline   Reply With Quote
Old 08-07-11, 04:58 PM   #6
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 20,358
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 633 Post(s)
Schwalbe Big Apples , come in 50 and 60mm widths.
smooth road tires..

1st came fat tires ,, they functioned like suspension on cruiser bikes,

then the limits pushers went past the capacity of an un suspended frame.
after breaking several , and more than a few bones,
and we got the Cliff jumpers on You tube.

where even a normal suspension travel is inadequate..

Last edited by fietsbob; 08-07-11 at 05:02 PM.
fietsbob is offline   Reply With Quote
Old 08-07-11, 05:49 PM   #7
mr,grumpy 
Senior Member
Thread Starter
 
mr,grumpy's Avatar
 
Join Date: Jul 2009
Location: Boston Burbs
Bikes: Diamondback Sorrento, 1978(ish) Peugeot PRN10e
Posts: 780
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
I guess it's all relative. I have two other MTBs and they both came with sub-2 inch tires. The fat ones are pretty knobby. They sound more like dirt motorcycle tires on pavement than the stock tires of the other bikes. I have never run out of traction on the narrower ones. I'm probably not that aggressive off road.
__________________
"I'm built like a marine mammal. I love the cold! "-Cosmoline
"MTBing is cheap compared to any motorsport I've done. It's very expensive compared to jogging."-ColinL
Rides:
1999-ish Diamondback Sorrento (I'm not Dead Yet! I feal happy. I think I'll go for a walk!)
1980ish Raleigh Marathon (Vintage Steel)
2007 Gary Fisher Advance (giving the Sorrento a break)
2006 Trek 820 (Captain Amazing)
2010 Specialized Tricross (Back in Black)


My little bike blog.
mr,grumpy is offline   Reply With Quote
Old 08-07-11, 06:54 PM   #8
katcorot
Senior Member
 
katcorot's Avatar
 
Join Date: Jul 2009
Location: New Westminster, BC
Bikes: 2013 Surly Big Dummy, 2008 Giant Rincon, 1980's Raleigh Century, 1970's Apollo Deelite, Tall bike
Posts: 255
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
guess he hasn't seen a pugsley or Mukluk with 4" tires...
katcorot is offline   Reply With Quote
Old 08-08-11, 03:18 PM   #9
JusticeZero
Rider
 
Join Date: Oct 2007
Location: New Orleans, LA
Bikes:
Posts: 1,077
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Maybe YOUR pavement isn't rough enough to justify fat tires, but the pavement here is rough enough that I was looking at 3 inch tires droolingly.
JusticeZero is offline   Reply With Quote
Old 08-08-11, 05:02 PM   #10
Doug5150
Senior Member
 
Join Date: May 2005
Location: IL-USA
Bikes:
Posts: 1,661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Fat tires inflated to moderate pressures absorb bumps really well, but still don't have much rolling resistance.
You can only run them at moderate pressures on wider rims though, and most bicycle companies are run by idiots nowadays who don't know jack squat about the stuff they're selling.

Big Apples will fit on a narrow rim @ 70 PSI, but they don't work right, and can't.
Get WIDE (35-40+ mm inside width) rims on your bike, get some 2.3 Big Apples on and inflate them to only 25-30 PSI and you'll finally understand how they're SUPPOSED to work.
Doug5150 is offline   Reply With Quote
Old 08-08-11, 05:27 PM   #11
Mr. Beanz
Banned.
 
Mr. Beanz's Avatar
 
Join Date: Dec 2005
Location: Upland Ca
Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
Posts: 20,030
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
2.1 tires

Mr. Beanz is offline   Reply With Quote
Old 08-08-11, 05:34 PM   #12
Sixty Fiver
Bicycle Repair Man !!!
 
Sixty Fiver's Avatar
 
Join Date: Sep 2007
Location: YEG
Bikes: See my sig...
Posts: 27,264
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
One aspect of bigger fatter tyres is that they work better for off roading and with heavier riders... lighter riders like myself benefit from running a narrower tyre as the wider higher volume tyres have far too much float and lose traction.

Used to ride some fairly intesnse CX and off road and always looked for tyres in the 1.75 range after finding tyres in the > 2.0 range did not offer the same traction and handling benefits.

Schwalbe has done a lot of research on tyre width / size and rider size and has also found this to be true.

A skinny road tyre actually exerts more contact pressure than a wide knobby tyre.
Sixty Fiver is offline   Reply With Quote
Old 08-08-11, 06:06 PM   #13
Flying Merkel
Senior Member
 
Flying Merkel's Avatar
 
Join Date: Mar 2008
Location: Costa Mesa CA
Bikes:
Posts: 2,639
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I have Tioga Yellow Kirin 2.1s on my bike currently. Got then with a set of cruiser rims I bought.

The rolling resistance is higher on the street, even inflated to 60 PSI. When you hit the brakeshard you stop instantly due to the huge amoint of traction. They work decently in the dirt.

When they wear out I'm going with narrower tires. Still looking for the best all-arounder street/dirt tires.
Flying Merkel is offline   Reply With Quote
Old 08-09-11, 12:24 AM   #14
gpsblake
Walmart bike rider
 
gpsblake's Avatar
 
Join Date: Aug 2004
Location: South Carolina
Bikes:
Posts: 1,889
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Fat tires will allow you to ride in dirt much easier and will be as smooth as a Cadillac on the road with the speed of a Yugo.

If you aren't worried about speed, 2 inch tire bikes will give you a good ride. Just don't expect to keep up with roadies.......
gpsblake is offline   Reply With Quote
Old 08-09-11, 10:58 PM   #15
mechBgon
Senior Member
 
mechBgon's Avatar
 
Join Date: Jul 2002
Bikes:
Posts: 6,957
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Example:


OK I lied, that's with 2.2s. Fast ones. Conti RaceKing Supersonic. Also used to set course records on the Midnight Century two years in a row. This year, I three-peated, but went with 2.0 Furious Freds.
mechBgon is offline   Reply With Quote
Old 08-10-11, 06:46 AM   #16
Mr. Beanz
Banned.
 
Mr. Beanz's Avatar
 
Join Date: Dec 2005
Location: Upland Ca
Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
Posts: 20,030
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by mechBgon View Post
Example:
OK I lied, that's with 2.2s. Fast ones. Conti RaceKing Supersonic. Also used to set course records on the Midnight Century two years in a row. This year, I three-peated, but went with 2.0 Furious Freds.
Nice video! Scary single track at 30 mph. Pretty sure I would have ate it right there ha ha!
Mr. Beanz is offline   Reply With Quote
Old 08-10-11, 10:50 AM   #17
stapfam
Time for a change.
 
stapfam's Avatar
 
Join Date: Jan 2004
Location: 6 miles inland from the coast of Sussex, in the South East of England
Bikes: Dale MT2000. Bianchi FS920 Kona Explosif. Giant TCR C. Boreas Ignis. Pinarello Fp Uno.
Posts: 19,915
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Depends on your weight- type of terrain- profile of the tyre and pressure.

I use Fire XC's in 1.8 and 2.1. It is a tyre that suits our terrain of Rough Chalk trails and some soil that is dry in Summer and Mud in winter. We also have a lot of Moor Grass that grabs hold of some tyres and slows them down but it does not grab the Fire XC's

I weigh around 150lbs and normally use the 1.8 unless it is a real wet muddy ride where I will use a Mud Specific tyre. But come the summer where the trails are rock solid I go over to the 2.1 for a bit of suspension. It is the popular tyre in our area and One of my mates used the 2.1 all the time. He weighs in at 190lbs but one day asked if he could borrow the 1.8s. He found that the narrower tyre gave him better control- better speed and more confidence. He also admitted that he had to raise the pressures a bit as he had a couple of snake bites at the normal 40psi he had initially put in so he found them a bit harsh till he got used to the increased speed it gave him.
__________________
How long was I in the army? Five foot seven.


Spike Milligan
stapfam is offline   Reply With Quote
Old 08-10-11, 12:54 PM   #18
DX-MAN
Banned
 
Join Date: Jun 2009
Bikes:
Posts: 4,789
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I run Michelin Country Dry 2.15's, and @ about 60psi, they roll BETTER than the skinnies I had on my rims.

Every tire has a "sweet spot" for tire pressure, and it varies with the rider; likely you didn't hit yours.

I have a set of "winter tires" (2.25 DMR Redshift, aggressive tread) that roll perfectly between 45-50 psi. With all the 'riding with kids' I do, trails are a distant memory; I'd knock the psi down for that, at least 10psi..........
DX-MAN 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 06:37 AM.