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its not about the size of the rim... its the distance between the inside of the rim and the chassi of the car.

they do something to your chassi, i think they make the space bigger by maybe adding spacers and I THINK they take a chunk out of the inside of the chassi to make the space bigger. im not 100% on that though

ive been told spacers are illegal

who no's :confused:

If you make major modifications or repairs to your car then it requires an engineering signatory to ensure your vehicle still complies with the ADRs. Its not a matter of just "getting it fixed", and its not something that you need to do only after you get defected. If you weren't modifying your car in a half-arsed way, then you would have already obtained the certificate before driving the car around.

The point of an engineering certificate is to have a qualified and independent person validate that your vehicle is still roadworthy. The engineer doesn't actually do any work on your car. They look at someone else's work and ensures that its not dodgy. That's why you need to have the car legal before taking it to them, so they can sign off on it.

So if the engineer doesnt work on the car to make it legal then who does?

eg mechanic?

From my interpretation of the Vehicle Standard Information (bearing in mind that I'm not a lawyer), there's no limits to the diameter of your wheel.

The VSI No. 9 (Guidelines for alternative wheels and tyres) states that your wheel track may not increase by more than 25mm. Your alternate wheel may not be more than 26mm wider than the factory rim without an engineering certificate. The outside diameter of your wheel and tyre combination can not be more than 15mm greater.

This means if your OEM wheel is 13x4, you can legally run a 22x5 rim if you can get it under the wheelarch and find tyres with a low enough profile without needing them engineered. However, a 13x5.5 wheel requires an engineer's certificate.

SPOT ON THE MONEY!!!!

as far as the ADR's go it's got nothing to do with the rim height. it's the overall rolling diameter and wheel track they look at. no cutting the chassis or spacers or anything like that! simply, you can't increase the wheel track by more than 26mm and the rolling diametre by more than 15mm.

solution: use wheel and tyre package to keep the diametre the same and use wheel offsets / rim widths to keep wheel track the same.

there was possibly also something about having to have x amount of clearance from all suspensino components but i can't remember.

so i should ring an engineer and ask if there is the possibility of legally putting a set of 19in rims on my car before considering it???

i just want to get a nice set of alloys <---- i like the neat look I'm sick of the bling look!!!

might be a set of vaults up for sale soon check out the for sale section if interested

sorry bout the hijack

its not about the size of the rim... its the distance between the inside of the rim and the chassi of the car.

they do something to your chassi, i think they make the space bigger by maybe adding spacers and I THINK they take a chunk out of the inside of the chassi to make the space bigger. im not 100% on that though

ROFLMAO. Thanks for the laugh :rofl: Only thing they would be cutting our of your car is your VIN plate :P

You only need wheels engineered if, as others have said, you go beyond the stated limits for track width and rolling diameter.

LW.

So if the engineer doesnt work on the car to make it legal then who does?

eg mechanic?

That's right.

Someone does the work, whether it be yourself or a mechanic. The engineering signatory inspects the completed job, validates ADR compliance, and provides you with a certificate stating that fact.

A crappy analogy would be your license skills test. It doesn't matter who teaches you to drive (your family or a friend, or a professional driving instructor). But, when you think you're "legal" in terms of your ability to drive, someone the RTA has qualified as being able to inspect that your driving ability meets RTA standards watches you drive, validates RTA road rule compliance, and provides you with a license stating that fact.

Note that the guy from the RTA, who provides you with your "driving certificate", never actually teaches you how to drive. They just make sure you can before letting you loose on public roads. If your driving ability doesn't meet the minimum requirements, they won't "fix" it. They'll just send you back to your "driving mechanic" and have them keep going until you can drive well enough.

so i should ring an engineer and ask if there is the possibility of legally putting a set of 19in rims on my car before considering it???

i just want to get a nice set of alloys <---- i like the neat look I'm sick of the bling look!!!  

might be a set of vaults up for sale soon check out the for sale section if interested

sorry bout the hijack

No you should look at the link to the vehicle standards bulletin posted earlier and see if your rims are ok to fit... as has been said a few times... just keep the overall rolling diametre the same (tyre + rim) and get an offset that keeps the wheel track the same as well (or as close to as possible) :rofl:

wheel track is measured from the centre of one wheel to the centre of the opposite wheel. (it's all in that bulletin).

so yeah, easy stuff man and it doesn't need engineering :(

No you should look at the link to the vehicle standards bulletin posted earlier and see if your rims are ok to fit... as has been said a few times

Sometimes I wonder why people even bother asking questions. They get people responding, spoon-feeding them the answer by direct linking to stuff they can easily find themselves, yet they just continue to tread down the well-worn path of ignorance and disregard the responses they get.

One thing to bear in mind is that an engineering signatory if clearly going to be mechanically minded, and I don't think there's enough money in just doing certs to live on.

As such, its quite likely that there are mechanics that are qualified to do engineering certs. So its possible you only have one person working and certifying your car, but technically he wears 2 hats. The professional who fixes or modifies your car is not the same professional that certifies it.

I don't know what the rules are about these people certifying their own work. I can't see why not, but the government might say that an engineering signatory may not certify his own work to ensure the independence of the certificate system. It might be an idea to ask one when you get your car done.

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