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June 1st, 2006 11:59 PM #12Originally Posted by boybi
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Tsikoteer
- Join Date
- Jan 1970
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- 396
June 2nd, 2006 10:57 AM #14new tires are balanced when they are installed. weights are added where needed.. so whats the point of the dots?
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June 2nd, 2006 11:50 AM #15
Well, like the tyre. almost all wheels/mags are not perfect so they are not 100% round or circular. The have minuscule imperfections that only machines (like the ones found at your suking tyre shop) can detect. If you look carefully and close enough, you'd find that your wheels/mags have notch or a mark stamped somewhere on the rim. Normally called a "dimple", this marks the lowest point of your mags. The dimple (lowest point) needs to be aligned with the highest point of your tyre (red dot).
However, there are tyres where the high point (red dot) is quite close to the tyre's heaviest part (yellow dot) and there are mags where the dimple is at the opposite end of the pito. If this is the case, then the red dot should be alligned with the mags' dimple - ignore the yellow dot.
Again however, as a rule of thumb used by experienced and well-knowledged tyre mounters, always align the red dot with the dimple and ignore the yellow dot totally.
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Tsikot Member Rank 2
- Join Date
- Oct 2002
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- 441
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June 2nd, 2006 05:30 PM #17
Well, these dots are properly aligned, the number of balancing weights (tingga) you would need to use would be minimized. Properly mounted tyres limits the RFV or radial force variation. If your tyres have a high RFV, the ride won't be that smooth and the ride won't be that comfortable. Plus, it lessens the effective performance of your car.
Medyo mahaba ang explanation sa RFV eh kaya eto na lang ang link sa Wikepedia, he he he. My apologies: medyo nerdy ang explanation dito.
What is Radial Force Variation?
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June 2nd, 2006 05:43 PM #18
cool thread, i just had new tires and wheels mounted last weekend, check ko nga kung aligned.
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June 2nd, 2006 06:16 PM #19
Interesting.....pero these marks has minor effects only for older rims di ba? Kasi naglalagay din naman ng weights to make sure of close to zero centrifugal drift during tire alignment if you fit new tires on old rims.....or maybe siguro dahil luma na rin yung rims kaya yun mismo ang may mga deformity contributing to the offset in centrifugal alignment.
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June 2nd, 2006 10:31 PM #20
just get a new car..are these tyres correctly installed ?..cannot seem find the dimples on the rims but the yellow dot is aligned to the pito....
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