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What is the colored dot on the side of the tire for?Answer: ---Some tires have Blue, Red and Yellow dots. You must contact the manufacturer and ask them what each means as there is no "standard" and it can vary. ---Yellow generally goes on the same side as the valve stem, directly in line with the valve stem, but as with any specification, contact the manufacturer, don't trust the "technician". Know what type of rim you have and find out where the dot is suppose to be in relation to the rim. This will not only add to the life of your tires because it will aid in balancing, but it can mean the difference between one weight and zero weights on a brand new rim and even two to three weights and zero weights on an old rim. ---Imagine, a brand new rim and tire that "zeros out" when spun the first time... and when checked again. From Tire Information World Dot Com Colored dots on sidewallby: Harvey Brodsky Tire manufactures use colored dots in the manufacturing process for many purposes, but generally they are "uniformity marks." Tires are almost perfectly round, but not quite. Uniformity marks help tire technicians identify they "not quite" part. This information is useful when mounting the tires on wheels.
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All four of our new Hyundai cars over the past 3 years have had red dots on the tyre sidewall aligning with a small, round, hard to remove, red sticker on the alloy wheel rim or spoke.I cannot recall seeing the same on my previous new cars of other brandsI assume that this is something to do with wheel balance and tyre fitting in the factory. But does anyone know precisely what and why and when and how they do it.It's keeping me awake at night........................
Yokohama can put it better than I....http://www.yokohamatire.com/tires_101/tire_care_and_safety/match_mounting/However, when buying new tyres it seems to be too much to expect a tyre fitter to fit the dot(s) in the correct position.. When getting four Dunlop winter tyres with red and yellow dots fitted last year at a major tyre outlet (owned by a major tyre company) I asked for the fitter to make sure the dots were correctly aligned. On going back to the vehicle only two were fitted correctly and getting him to refit those tyres and re-balance the wheels took a lot of cajoling.
Quote from: baradeur on May 21, 2013, 15:53:26Yokohama can put it better than I....http://www.yokohamatire.com/tires_101/tire_care_and_safety/match_mounting/However, when buying new tyres it seems to be too much to expect a tyre fitter to fit the dot(s) in the correct position.. When getting four Dunlop winter tyres with red and yellow dots fitted last year at a major tyre outlet (owned by a major tyre company) I asked for the fitter to make sure the dots were correctly aligned. On going back to the vehicle only two were fitted correctly and getting him to refit those tyres and re-balance the wheels took a lot of cajoling.WHY???????????????I wouldn't expect a new tyre to be balanced due to the way it is made and differences in the compound without it actually being checked on the machine ....Whenever I've had new tyres they remove the old weights and put new ones on.
Quote from: 1 YO on 19th May on May 21, 2013, 16:02:11Quote from: baradeur on May 21, 2013, 15:53:26Yokohama can put it better than I....http://www.yokohamatire.com/tires_101/tire_care_and_safety/match_mounting/However, when buying new tyres it seems to be too much to expect a tyre fitter to fit the dot(s) in the correct position.. When getting four Dunlop winter tyres with red and yellow dots fitted last year at a major tyre outlet (owned by a major tyre company) I asked for the fitter to make sure the dots were correctly aligned. On going back to the vehicle only two were fitted correctly and getting him to refit those tyres and re-balance the wheels took a lot of cajoling.WHY???????????????I wouldn't expect a new tyre to be balanced due to the way it is made and differences in the compound without it actually being checked on the machine ....Whenever I've had new tyres they remove the old weights and put new ones on.Why what? ................................... Of course the old weights are removed and the wheel assembly is re-balanced after fitting a new tyre.
Yeah they're useless.Every time I stop and look at mine, the red dots are in different positions
What's most important is to have a technician fitting your tyres who understands balancing and how important it is to get the readings within tolerances. This may sometimes mean deflating and rotating the tyre on the rim after the initial balance.
Quote from: Surferdude on May 23, 2013, 22:56:38What's most important is to have a technician fitting your tyres who understands balancing and how important it is to get the readings within tolerances. This may sometimes mean deflating and rotating the tyre on the rim after the initial balance. "technician fitting your tyres who understands balancing Like placing balance weights 6" apart on the rim? "This may sometimes mean deflating and rotating the tyre on the rim after the initial balance". It takes some perseverance to get this done.
I probably should say that, super wide car tyres can sometimes be a problem too.
Last time i had tyres balance the machine told the operative where to place the weights.
thats pretty awesome, its hard to belive that a card would affect it so much!!
Quote from: The Slim One on May 25, 2013, 00:19:52Last time i had tyres balance the machine told the operative where to place the weights.They (the balance machines) have been doing that for 40 years.But the operator still has to apply them accurately. And if the machine (most work in 5 gram increments) says 45 grams, it may be 42/3 or 47/8 which is needed. So putting on a 45 gram weight may give you a slight reading of 5 or 10 grams, some degrees off to one side. The good operator knows to try a few options. Like try a 35 gram weight in the same spot. Or move the existing weight marginally (maybe as little as a centimeter) to the side. In addition, depending on knowledge and experience with the particular car model, wheel and or tyre combination and condition of the car's suspension and rims, the operator may know whether or not a difference of a few grams will cause a problem.I saw a demonstration many years ago by a German specialist who balanced up a wheel and tyre assembly, zeroing it out with the fine tune option. He then deflated the tyre and wedged a normal sized business card between the bead of the tyre and the rim. The assembly then needed 10 grams weight on both the inside and outside rims (not in line with one another) to offset it.. This was not just because of the weight of the card but the slight difference in the "seating" of the bead against the rim.