nigel-farage-donald-trump-1479116302-list-handheld-0.jpg
 
Look up ECE-R-39

It's an EU regulation which is probably why Wammers is so hot on compliance being a big fan anorl ;):p
Thanks, found this:
https://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/r039r1e.pdf

Which is I assume what you are meaning. Although interestingly these are regs for "type approval". So if the op was manufacturing a Range Rover and was seeking EU type approval the regs would apply.

But owning an old used vehicle which has been modified and then maybe randomly being pulled over by plod in the UK. These are not UK laws for that purpose. I do not believe you'd be able to cite this regulation in a court room, because a private citizen had fitted larger tyres. That's not how Type Approval regs work.

e.g. it's not illegal to fit wider tyres to a vehicle, even if that size was not used for the vehicles type approval. The speedo thing isn't 100% the same case, but it's a similar sort of thing. The regs within it, are only relevant for seeking type approval.
 
Did you miss the bit about 2001 onwards? Old speedo regs were + or - 10% at an indicated 30 MPH. That is because when they were introduced the only speed limit there was in the country was 30 MPH in built up areas. Everywhere else was unrestricted. That is why speed cameras are set at 30 MPH +10% +2 MPH before they activate. In 1999 the EU introduced a law that said speedos could not read any slower than actual road speed. But actual road speed could be 10% less than indicated to allow for tyre wear. That was introduced in the UK in 2001. Larger diameter tyres than standard would make any vehicle made in or after 2001 instantly illegal for use on the road. Older vehicles still enjoy the + or - 10 % rule so have a tad more tolerance to tyre size. So technically if some dickhead with a speed gun records your series III at 31 MPH in a 30 area and tries to ticket you he cannot do it. However if your car was made after 2001 he can.

That's all nice an that, but can you provide a reference for the +- 10% thing. It's not that I'm doubting you, but I can't exactly use you as a point of reference. Something official would be nice.

And to be fair to the op, there is a very good chance a p38a is pre 2001 anyhow. So they'd still be fine most likely.

And just to throw something else out there. Not all vehicles on UK roads have to adhere to EU type approval. Unlikely to be the case with a p38a I admit, but a NAS D90 or JDM Discovery most certainly would not be needing to meet EU type approval. Nor would a grey imported Ford F250 from the USA. At most they'd need to pass an IVA/SVA, which if they are on the road legally they would have done. If over a certain age (10 years I think), then they don't need any further approval for UK road use, only to be registered.
 
Thanks, found this:
https://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/r039r1e.pdf

Which is I assume what you are meaning. Although interestingly these are regs for "type approval". So if the op was manufacturing a Range Rover and was seeking EU type approval the regs would apply.

But owning an old used vehicle which has been modified and then maybe randomly being pulled over by plod in the UK. These are not UK laws for that purpose. I do not believe you'd be able to cite this regulation in a court room, because a private citizen had fitted larger tyres. That's not how Type Approval regs work.

e.g. it's not illegal to fit wider tyres to a vehicle, even if that size was not used for the vehicles type approval. The speedo thing isn't 100% the same case, but it's a similar sort of thing. The regs within it, are only relevant for seeking type approval.

Wider tyres are no problem providing they do not foul. Larger diameter tyres are a problem because they alter the speedo readings and the vehicle then does not comply with it's type approval certificate and is therefore illegal to use on the road.
 
Larger diameter tyres are a problem because they alter the speedo readings and the vehicle then does not comply with it's type approval certificate and is therefore illegal to use on the road.
Sorry, I just do not believe that is the case. Think we will have to agree to disagree on this one.
 
Sorry, I just do not believe that is the case. Think we will have to agree to disagree on this one.

No problem, i am sure you will think of something to say to convince the VOSA people if you get pulled at the roadside, when they decide to have a clamp down. ;)
 
Is he actually still going on ha
Glad a hit the ignore button
As stated on first page thanks for info

If you want to ruin a P38 by all means do so. But be a good little lad and do it on the off road area, i am sure you will find many like minded planks who will agree with you there. But don't do it in the place they are held in high esteem.
 

Similar threads