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Thread: Alloy welding?

  1. #1
    Regular Member L11Marc's Avatar
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    Default Alloy welding?

    Driving home last night & I heared a noise which sounded like a tyre going down, I thought it was the car next to me at the lights but it was mine. Got out and it was the front passenger side tyre with a very small hole on the inside of the tyre. Went to my local garage who I only bought these tyres off 3 weeks ago and they had a look and noticed on the inside of my alloys are 2 hair line cracks both on the very edge of the alloy. They said until I get them welded every tyre will just go down slowly.

    Im guessing with it being the inside of the alloy its due to hitting speed bumps (Liverpool is terrible for them). I think I know what speed bumps they are too.

    Anyway, welding, can it be done on the edge? or is a brand new alloy required? Been to a alloy repairer he said his boss wont let him touch them as its so close to the edge. Went to a alloy shop they said Ill need a brand new alloy...?

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    Ex-Staff Full Member John LE's Avatar
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    Normally the cracks can be repaired but I am guessing yours has 2 cracks close to each other. May be worth trying a few other places before buying a new one

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    Regular Member L11Marc's Avatar
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    Quote Originally Posted by john.robertson2 View Post
    Normally the cracks can be repaired but I am guessing yours has 2 cracks close to each other. May be worth trying a few other places before buying a new one
    No mate, the hole is right next to 1 of the cracks but the other crack is the opposite side of the alloy. Id rather get it repaired than fork out £200+ for an alloy!

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    Hi mate, you can definatley get the wheel welded, The cracks on the inner rim are really common as that is the weakest part of the wheel. I had one of my snowflakes welded that had 3 hairline cracks on here http://www.alloywheelrepairs.net/
    It cost around £70 if I remember correctly, and whilst it looked perfect when it was done it only lasted about 6 months and the wheel cracked again at the repaired area.

    In the end I managed to get a second hand wheel from ebay for £100, so it may be worth your while watching this http://cgi.ebay.co.uk/Astra-VXR-19-A...item2a0a45b485

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    Forum Moderator FIL 4822's Avatar
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    Default 28 years a welder !

    What you have to remember about welded metal is that the area thats been welded becomes stressed due to the heat created by the welding process. Also if the metal is cooled rapidly, this can cause cracks in the immediate area (not necessarily in the weld) as it changes the molecular structure of the metal within the heat affected area.
    My concern with repairing cracked aluminium is that the metal needs to be spotlessly clean, not just on the surface but within the crack itself. If any contamination is present such as oil or grease, this will cause a porous weld and ultimately another defect.

    I'm not a fan of crack repaired wheels, i'd be looking at finding a replacment alloy if it was me.


    Have consideration for the deaf, if you're gunna fart, make it smell !


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    Regular Member L11Marc's Avatar
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    Thanks for the help ill keep a look out for a new alloy as cheap as if not ill go with the welding job.

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    Agree with FIL, I wouldn't get it welded, I would look for a replacement wheel. The risk is too great and wheels are kind of important.

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    Regular Member Danwells72's Avatar
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    I agree, dont bother welding it but if you must then you can tig weld it. you can get them cheap enough on ebay

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    Regular Member L11Marc's Avatar
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    I just hope Im not being given false info from the tyre place. The hole appeared around 1/2cm away from the start of the crack, is that possible? or can the hole be due to a nail.

    I can understand the hair line crack causing air to leak but not cause a hole were you can feel the air on your hand as its going down at a rapid speed.

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    Replace for your own safety and ours too.

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