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Old 9th July 2008, 00:34   #1
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Default Proper Tire Mounting

Tire Tech Information - Match Mounting to Enhance Tire & Wheel Uniformity

Car Bibles : The Wheel and Tyre Bible Page 1 of 2

Assuming you know about correct tire mounting practices , a question :-

My tires and wheels aren't perfectly mounted . Now 8000 km later do you think that correctly mounting my tires is advisable or not?
As in should I leave them alone because the tire's must have worn "evenly" at their respective mounting "angle" .
Is it bad to remount tires? It doesn't seem to be a gentle procedure .

Keep in mind my tires - Yoko S drives have HIGH treadwear ratings ie 300 .

Also do all tires' { identical tires-make,model,size } have the same high and low point markings ?

Not sure where the markings were on my tires {they were a gift} , not even sure if my rim's had markings {another part of the present} .

This is a picture off this forum , it's a 195 , I am on 205/55/15.

http://www.team-bhp.com/forum/iipcache/107895.jpg

Any help/advice highly appreciated.
cheers people
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Old 9th July 2008, 01:05   #2
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Yokohama

Yokohama

Nice yokohama links , just found , gonna follow the first to a T .


Observe match-mounting procedures
Proper tire and wheel assembly balancing is important from a vehicle safety standpoint. In high-speed driving, improperly balanced tire/wheel assemblies will cause a vehicle to lose stability and not operate in a safe and comfortable manner. Improperly balanced tire/wheel assemblies also cause abnormal treadwear patterns.

To facilitate proper balancing, Yokohama places red and yellow marks on the sidewalls of its tires to enable the best possible match-mounting of the tire/wheel assembly. There are two methods of match-mounting Yokohama tires to wheel assemblies using these red or yellow marks:

  • Uniformity (red mark)
  • Weight (yellow mark)
Warning: Improper mounting, underinflation, overloading or tire damage may result in tire failure, which may lead to serious injury. Tire and rim sizes must correspond for proper fit and application. Never exceed 40 psi to seat beads.

Warning: Tire changing can be dangerous, and should be done only by trained persons using proper tools and procedures established by the Rubber Manufacturers Association. Failure to comply with proper procedures may result in incorrect positioning of the tire, tube or wheel assembly, causing the assembly to burst with explosive force sufficient to cause serious physical injury or death. Never mount or use damaged tires, tubes or wheel assemblies.

Uniformity Method
When performing uniformity match-mounting, the red mark on the tire, indicating the point of maximum radial force variation, should be aligned with the wheel assembly's point of minimum radial run-out, which is generally indicated by a colored dot or a notch somewhere on the wheel assembly (consult manufacturer for details). Radial force variation is the fluctuation in the force that appears in the rotating axis of a tire when a specific load is applied and the tire rotated at a specific speed. It is necessary to minimize radial force variation to ensure trouble-free installation and operation. Not all wheel assemblies indicate the point of minimum radial run-out, rendering uniformity match-mounting sometimes impossible. If the point of minimum radial run-out is not indicated on a wheel assembly, the weight method of match-mounting should be used instead.

Weight Method
When performing weight match-mounting, the yellow mark on the tire, indicating the point of lightest weight, should be aligned with the valve stem on the wheel assembly, which represents the heaviest weight point of the wheel assembly. After match-mounting by either of the above methods, the tire/wheel assembly can be balanced.



Last edited by cyneverdie : 9th July 2008 at 01:20.
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Old 9th July 2008, 01:37   #3
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Technically the same plus a bit more a nice read , its a yokohama - TECHNICAL SERVICES BULLETIN.

http://www.yokohamatire.com/pdf/tsb-...ance-12803.pdf

Reinforces a/my need for proper mounting.
Will let you know how goes it when I do do this.

http://www.team-bhp.com/forum/tyre-a...nt-bombay.html (Hunter Wheel alignment in Bombay?)
Hopefully the hunter boys have a hunter tire mounting machine with proper tire lubricant , not soap water.
wink.
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