Alloy wheel repair


Gav-EK9

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here's what you need:

The paint

Lacquer

Wheel Primer

Putty

240 and 400 wet & dry sand paper

Paint thinner

Masking tape & masking paper



Step 1. Clean... Clean... Clean !


This is one of the most important steps. Use paint thinner to THOROUGHLY clean the ENTIRE area around the damage...you need to get ANY wax or polish or anything off the wheel...I'm going to remind you EVERY step...I probably end up wiping down these surfaces 10 or more times before painting...if you don't do this, the rest is pointless. Also, we want to work ONLY on the area that's damaged...don't go nuts and try to paint half your wheel on the car...for this technique to succeed we want to sand and paint the area only IMMEDIATELY around the damage.

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By gav896 at 2011-03-30

Use a lint-free cloth for cleaning your wheel. Prior to cleaning with paint thinner (Prepsol is even better), scrub the tire and wheel with dish detergent (Dawn) to remove as much silicone (tire protectant) as possible. Dry thoroughly.

2. Sand and Putty

like to START by masking the tire from the wheel...get the masking tape WELL behind the rim.

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By gav896 at 2011-03-30

Next, sand the area to a nice "feather" with 240 grit sandpaper and wipe some spot putty on. IMPORTANT...this ENTIRE project will work best if the wheel is in the sun and its a nice warm day...the drying time of spot putty is minutes but if it's cold or damp, this project is likely to not work out too well. Remember...keep your sanding to the IMMEDIATE area around the damage.

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By gav896 at 2011-03-30


So once you've done the first round of putty, switch to the finer of your sandpaper (400 grit in this case) and sand and putty until it FEELS and LOOKS flush. Note that the paper is wrapped around a piece of wood or rubber eraser to make a flat sanding block. It's best to sand with a flat block to get the smoothest finish.

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By gav896 at 2011-03-30

Note that up to this point...including waiting 5 to 10 minutes between coats of putty that the whole project has taken about 40 minutes.

3. Mask and Primer

Okay, here's where a bit of laziness is going to create an entirely new project. The paint will get everywhere. I'm talking permanently attached to the fender on the opposite corner of the car. Mask carefully and cover the entire car with an old sheet or equivalent.

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By gav896 at 2011-03-30

I've used the scratch-filler primer and sanded it and put a bit more putty on. Note that this is the first place where I use my special technique. Immediately after I spray the primer (or paint) I clean all of the overspray off the spokes of the wheel (clean rag and paint thinner) and the area around the inside of the rim. I do not want to try to get the paint to smoothly adhere to the entire wheel! We only want to paint the REPAIR. Only the clear coat will be sprayed without wiping off the overspray. Wait for the primer to fully dry and lightly sand it with 400 or 600 grit sandpaper.

Use a lint-free cloth for cleaning your wheel. Prior to cleaning with paint thinner (Prepsol is even better), scrub the tire and wheel with dish detergent (Dawn) to remove as much silicone (tire protectant) as possible. Dry thoroughly.

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By gav896 at 2011-03-30

4. Painting

VITAL: Read the instructions on the can! If you try to use this paint in cold temperatures (or in damp conditions) it's going to be a mess. Shake the can for at least a full minute and push the spray nozzle as you sweep across and release at the end. Spray on, spray off. Spray on, spray off. Apply as a very fine coat. You're not trying to make it glossy. That's the job of the top clearcoat.

This is roughly the distance I used the can from the wheel. I highly recommend practicing on a scrap part to get used to the distances and thickness this paint sprays.

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By gav896 at 2011-03-30

Now we should be nearly done but if you get inpatient and spray the clear way too soon. As a result, the clearcoat will lift the paint and mess up the job.

Here's the paint lifting due to the clearcoat being applied too soon. Be sure to give plenty of drying time.

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By gav896 at 2011-03-30

This is no biggie. Take a deep breath, get out your rag and the paint thinner and take it all off. The thinner I used did not eat into the primer so I simply cleaned the wheel (again) and re-sprayed the silver paint.

Okay, fast forward a few minutes... I had to roll the car forward a bit to keep it in the sun and I had cleaned (and let fully dry) the wheel and RE-sprayed the silver. Now carefully remove the overspray.


After the silver colorcoat dries (overnight is best), you can apply two thin coats of clear with about 20-30 minutes of drying time between coats. After the clear dries (another day) you can use 1500-2000 grit wet and dry or a fine cut compound to feather in any traces of the repair. Use a final polish to restore full gloss.

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By gav896 at 2011-03-30

Here's the nicely repaired and painted wheel!
 

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Last edited by a moderator:
nice write up mate, should come in handy some day :nice:
 
Brilliant guide mate, I have alloys at the moment in which i have to repair. I will most definitly use this when I get round to doing them. :))
 
when did you do that porsche gav??
its a great job mate can't notice a there was even a hair line scratch in the end result..
Good job man respect.
i wouldn't trust myself doing this on a porsche :nerv:
 
ha, just to be clear this wasnt me that carried out this repair i wouldnt trust myself with porche wheels either :lol:

Thread is here purely for advice and a kind of "how to" incase peeps are going to or want to carry out this repair in the future :D

ps: my arms aint that hairy :p
 
HAHA i honestly noticed how hairy they were. LMAO :))
good advice there though... may try this to a set of wheels i got. once the weather gets nicer.. :(

this has gotta be a sticky surely...
 
HAHA i honestly noticed how hairy they were. LMAO :))
good advice there though... may try this to a set of wheels i got. once the weather gets nicer.. :(

this has gotta be a sticky surely...

yup stickied ;)

searched for a good wheel repair guide for ages, found this and it's ideal :D
 
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