how safe are wheels after re-drilling?

[theblueflash 0]

im looking at a set of wheels which are currently 5x120. but they have been machined flat on the backs so could possibly be re-drilled to 5x100. here is a pic.

anyone know how safe this is? where it could be done and if it compromises the strength of the alloy in anyway?

cheers

[bungy 2]

Best if done by someone who truly understands alloy wheels as there is a minefield of possibilities. Would you be getting the existing holes welded closed aswell?

[jims13 6]

id mirror what bungy said, only get it done by someone that knows there stuff, i have a guy local to me that can, but he is someting of a wizard with metal , i would not trust anyone else.

if not there's always adapter plates

[richievr 1]

those will fit fine with adaptors..

[theblueflash 0]

you sure? et32 is what they're advertised as. even with 20mm adapters the final offset et12 surely your offset is different. they look too tucked in. nice car btw. suits them really well

[vr6stormt 0]

ive looked into this recently and even though the backs are flat its the stud pitch on front thats the prob BK WHEELS DO REDRILLING and machine work good prices aswell ?

[theblueflash 0]

ive looked into this recently and even though the backs are flat its the stud pitch on front thats the prob BK WHEELS DO REDRILLING and machine work good prices aswell ?

so you're saying that even with adapters and the offset not being a problem the holes are not going to line up properly?

[vr6stormt 0]

no just about the redrilling mate but if your using adapters you need to work out the overall et

[Ben Seabrook 4]

you sure? et32 is what they're advertised as. even with 20mm adapters the final offset et12 surely your offset is different. they look too tucked in. nice car btw. suits them really well

wrong way round mate adaptors increas the et

[Rikki 2]

The lower the et the smaller number = more poke so adapters will make the et smaller! are they the e36 style 5's like richies....if so they csnt be redrilled as the 5x100 will be too close too the middle as bmw wheels have a large centrebore!

[Rikki 2]

This is the same wheel drilled to 4x100 so will be the same with 1 more hole.

[bungy 2]

That is amazing and I didn't realise it was possible. I really would appreciate someone explaining the whole wheel fitment / et thing. Either by pm or a specific thread.

[Rikki 2]

Amazingly damgerous imo lol

[craggsy 91]

This is the same wheel drilled to 4x100 so will be the same with 1 more hole.

Wow Rikki if thats real it doesnt look safe to me....but hey what do i know

[Nero Mk 2 8]

http://s1042.photobucket.com/albums/b429/nero1701/

here's some i done last week,

increased the centre bore by 6.1 mm

Looking at the wheel above, imo there is not much meat left for the hub to 'sit' on and i would question my safety

[bungy 2]

Amazingly damgerous imo lol

I'm not doubting the safety aspect, they are ridiculously close to the centre and varying amounts of material in different places is only going to weaken them further.

[Ben Seabrook 4]

That is amazing and I didn't realise it was possible. I really would appreciate someone explaining the whole wheel fitment / et thing. Either by pm or a specific thread.

http://www.raceandroad.com/technical-help/alloy-wheel-offset.html quite clearly explained here matey

[xyber 1]

I've got a mate that's done a few sets of these. He plugs and welds the original holes, grinds smooth, then redrills to the specs needed. Like that they are solid and you'd have no worries about them failing

[VeedubVR 0]

How wide are the wheels?

Voodoo motorsport are re-drilling wheels but they aint cheap. But if your wanting it done, I wouldnt be trying to cut any orners. If done properly they should be safe, but I'd try and see if adaptors will work first.

I was thinking about getting my wheels redrilled to 5x100 from 5x120. Get the holes welded up and new stud pattern drilled, but its cheaper tp buy BMW adaptors (and they aint cheap). BUt if I got the re-drilled, it meant the wheels could go stupid wide.

[jimmyb 2]

http://www.raceandroad.com/technical-help/alloy-wheel-offset.html quite clearly explained here matey

im waffled,et phone me!

[theblueflash 0]

That is amazing and I didn't realise it was possible. I really would appreciate someone explaining the whole wheel fitment / et thing. Either by pm or a specific thread.

http://www.raceandroad.com/technical-help/alloy-wheel-offset.html quite clearly explained here matey

according to that picture the further the centre of the wheel moves from the hub the more negative the 'et' so if the wheels im thinking of buying are et32 and i add 20mm spacers i thought the number decreased? as per the diagram... moved into the negative? if thats wrong i am confused.

as for the re-drilled wheel in that pic, you couldnt pay me to drive with them on my car! is there even any alloy left between the hole and the hub

[theblueflash 0]

ok this just got more confusing. aparently i am right with the decreasing 'et' by adding spacers/adapters but its just been mentioned to me on ed38 that 1mm doesnt =1et. which is what i was always told. so the et32 with 20mm adapters would be more like et22 or there abouts. not 12 like i originally thought. jesus this is confusing.

why is choosing new wheels so difficult. im gonna need more help with this i think. i dont want them too tucked, but a 20mm adapter is a big difference and i dont want them running silly wide.

here is what im shopping for if you hadnt already guessed. maybe not these specific ones but rs's take my fancy, or rc's if i cant stretch to that price.

[Special K 81 0]

You obviuosly have to take into account the width of the wheel, obv if the wheel is wider than you already have then you are going to lose clearence between wheel and hub unless the et is a fair bit lower than what you have(lower being et number being less).

Put simply(ish) If your vr6 wheels are like mine tire size 205/50 r16(im assuming standard??) that makes them 7 inch wide, the offset is 45(et45). So..

if you changed to a set of wheels 7" et35 you get 10mm more clearence(clearence being between inside wheel to strut/hub) and 10mm extension(poke...call it what you like,basically the outside of the wheel.)

If you on the other hand changed to 7" et55 thats 10mm less 'clearence', plus wheels tuck in arch by 10mm.

Thats the basics...lower the et number more clearence and extension, higher number equals less clearence further tuck in arch. this is ONLY true if the wheel of choice is the same width to what you have already or vw intended

Now thats all good,but wheel width now plays a factor, if width is wider you automatically lose clearence and extend futher than what you have, now if you lower your et with wider wheels clearence is less but maybe not a prob (i.e no fouling of components but wheels will obv stick out further, go wider again and this is repeated(less clearence more....you get the point im sure)

Ok if you go wider wheel and higher et than you have, fouling will definately occur and this is where spacers etc come into play.

It can as you see be very complex but hope in a small way it helps someone.....or anyone ha ha

[Special K 81 0]

Whats the spec of these wheels pcd 5x120, et?,width? Can try and work it out!??

Without redrilling you know you ill have to use adaptors, with redrilling not needed unless et is higher number.

[theblueflash 0]

Whats the spec of these wheels pcd 5x120' date=' et?,width? Can try and work it out!??

Without redrilling you know you ill have to use adaptors, with redrilling not needed unless et is higher number.

[/quote']

5x120 16x7 et32 (all corners)