kit
Part of things
Do Want.
Posts: 85
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May 19, 2009 14:30:49 GMT
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I've been offered a set of 14" alloys which are supposedly magnesium, including the tyre (185/60/14) they are 10/11 KG each.... does that sound about right?
Does anyone know how much approximately a regular 7J x 14 alloy weighs with a tyre?
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1984 Audi 80, 1.8 DZ, Sport, Type 81, B2
1990, Golf mk2, 1.6 carb, Driver - V6 track project
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Ghost
Part of things
Posts: 112
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May 19, 2009 16:30:38 GMT
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Well the 14x6JJ stock teardrop alloys on my MK1 MR2 weight approx 16.5kgs (with 180/60 tyre), so that's sounds quite light to me.  |
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May 19, 2009 16:37:57 GMT
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Sounds about right to me! I would recon at about 4-5kgs each without tyres. My steelies with ACB10s weigh in at 9kgs each complete... pity the tyres are hard and wibblepoo  |
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1997 TVR Chimaera
2009 Westfield Megabusa
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May 19, 2009 16:53:48 GMT
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if they are genuine mags they'll be a nightmare to look after, they corrode really badly, hence being used on race cars and not road cars.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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May 19, 2009 16:57:02 GMT
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if they are genuine mags they'll be a nightmare to look after, they corrode really badly, hence being used on race cars and not road cars. Its mostly down to the fact that magnesium is really brittle. I've got part of the remenants of an Ex-F1 wheel that hit a concrete block, absolutely no deformation at all, just shattered! I doubt they are plain magnesium, they'll be a high magnesium content alloy i would have thought. |
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1997 TVR Chimaera
2009 Westfield Megabusa
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May 19, 2009 17:12:19 GMT
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I had American racing mags on the front of my old fairmont, ended up painting them in the end to try and keep them in one piece, racing wheels are brittle but so are road alloys, just shows up more in racing wheels as they are paired down to the lowest weight possible.
Aircraft use magnesium wheels and they have the tyres stripped off on a regular basis to check them as they can corrode from the inside out and develope holes in the rim, ,agnesium is more brittle than aluminium, the main issue though is that you cant bend it back straight like you can with an ordinary alloy wheel if you dent the rim on a pothole, some 'vettes have mags on em i think, my mate said his had and he's had two new one on it so far because of road damage.
If they are designed for road use they may be low magnesium content, just enough to justify the name, in which case they wont be much lighter though.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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kit
Part of things
Do Want.
Posts: 85
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May 19, 2009 21:54:11 GMT
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if they are genuine mags they'll be a nightmare to look after, they corrode really badly, hence being used on race cars and not road cars. How can steel wheels weigh less than magnesium/aluminium alloys  |
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1984 Audi 80, 1.8 DZ, Sport, Type 81, B2
1990, Golf mk2, 1.6 carb, Driver - V6 track project
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because theres less material in a steel wheel, they bend rather than break so don't need to be as strong, I dunno the exact figure, but if the alloy used is 50% the weight of steel but you need 75% more of it then it'll be heavier.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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berendd
Europe
why do I need 3 keys for one car?
Posts: 1,449
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May 20, 2009 12:27:09 GMT
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A good alloy wheel intented to be light can be lighter than steel, but most of the times steel is much lighter.. alloy is for show!
I have a set of alloy high magnesium content alleycats, they weigh 4,5 kgs a piece (5,5x13) so 10-11kgs doesn't sound very strange..
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Tim
Posted a lot
Posts: 3,340
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May 20, 2009 12:29:54 GMT
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if they are genuine mags they'll be a nightmare to look after, they corrode really badly, hence being used on race cars and not road cars. How can steel wheels weigh less than magnesium/aluminium alloys Most are - alloy wheels are for looks :-) |
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