Under Pressure

R34ME

.060 Over
Joined
Aug 5, 2006
Messages
197
I run 32 psi front 42 psi rear, tyres look good after 2000 miles.:)
 

dougl

Living Legend
Joined
Sep 11, 2005
Messages
2,390
Location
Reno, NV
Ride
2007 R3 Classic
tire pressure

The owner's manual says 42/34. I use 42/36 because my dealer suggested it.
 

Hondax

Moderator
Joined
Mar 8, 2006
Messages
1,287
Location
Body:West Central Missouri, Mind: Yes I are.
I run mine a couple lbs less on both cuz I'm only around 200lb and they appear to wear the best that way.
Now if my wife ever joined me, lbs would change drastically if you know what I mean!;)
Flips right. It seems I add air more often but that's always been the case with my motorcycles.
 

Toystoretom

Living Legend
Joined
Feb 25, 2006
Messages
2,449
I follow the owner's manual, but if I wanted to pull wheelies I'd drop the rear some :D..

Just remember, for every 10 degrees F drop in temperature you loose one PSI.... you could actually loose 4 or 5 psi depending on how hot it was when you filled them with air and how cold it is now...

And I like to fill my tires with helium... it makes the bike lighter, plus you can huff it and it makes you talk funny...
 

bigern2300

.060 Over
Joined
Sep 9, 2006
Messages
194
Location
Tahlequah, Oklahoma
I agree with Sidecar on this one. I run 42 psi front and rear. I've never understood the lower tire pressure on the front tire considering it is a smaller tire, it is supporting about 75% of the bike weight, and has a considerable amount of downforce on it. I can tell when the front tire on my Rocket is down a couple of pounds of air...it handles like a stump.
 

Sidecar Flip

Living Legend
Joined
Jul 16, 2006
Messages
6,359
Location
20150 Mc Carty Rd. Deerfield, Michigan 49238
Please note...

A little note on tire pressure gages. They aren't all created equal. Just the opposite and just because it's a digital one, that don't mean it's good to go either.

I use a Wikka glycerin filled gage (which is a true Burdon tube gage). The glycerin is just for dampening pulsations and isn't really necessary. I have the gage coupled to a foot long whip hose with a Milton air chuck on the end. Wikka gages are industry standard for accurate pressure measurement and are ISO certified. They aren't cheap either. I believe the most inaccurate gages are the slide type pencil gages. The friction of the moving slide can acerbate the inaccuracy. I've compared the Wikka to a Milton slide gage in the shop and have found a 5-7 pound differential. The cheaper digital one from Auto Zone is better at 3 pounds, but I prefer the analog Wikka gage.

I don't see any advantage in filling your tires with an inert gas other than if you want to spend extra money or if you are running 200 plus mph., day in and day out. Save the extra bucks and buy some beer.
 

Pig9r

Living Legend
Joined
Mar 5, 2006
Messages
4,848
Location
Kansas City, MO USA
The main reason I asked is (as stated by others) it seems I am always adding air. I also noticed the max pressure stamped on the tire is the same Triumph recommends in the owner's manual and as stamped on the frame decal. At least on any of the vehicles I have owned, I never have had to inflate the tires to the max pressure stamped on the tires, the manufacturer's specs is usually substantially lower. I can't remember if my old speed triple was that way also.

My wife bought a new set of tires at Costco. I noticed they put green valve stem caps on. I asked what that was for and they said they only fill tires with nitrogen because "normal" air breaks down the tire faster and is not as reactive to changes in the temperature. Sounds good to me.
 

Sidecar Flip

Living Legend
Joined
Jul 16, 2006
Messages
6,359
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20150 Mc Carty Rd. Deerfield, Michigan 49238
Pig9r said:
My wife bought a new set of tires at Costco. I noticed they put green valve stem caps on. I asked what that was for and they said they only fill tires with nitrogen because "normal" air breaks down the tire faster and is not as reactive to changes in the temperature. Sounds good to me.

Sounds okay to me too. I'll keep using shop air from the compressor. I have a feeling that while Costco includes the Nitrogen fill, nitrogen must be purchased in bottles or generated with a nitrogen generator (which ain't cheap) so you are paying for it somewhere along the way.

Normal o2 might break down the tire's insides faster, but I suspect you'll wear out the carcass before that happens. I've never used Nitrogen in my class 8 truck tires and they run hotter and longer than any passanger car tire. Besides, if you need to add nitrogen to adjust pressure and there is no nitrogen available, you're screwed.:D

I don't have green caps or black either. I use metal hex caps with internal "O" rings called "test caps" on all my vehicles including the trucks.
 

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