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Old 21 June 2018, 11:15   #1
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Towing size restrictions

Hi all,

There's loads and loads of info on this forum about towing weight restrictions, but I'm struggling to find anything about length and width restrictions.

I've seen some websites saying you can tow up to 7m length - but this can't be right as I can see trailer manufactures making trailers for longer boats.

I've also seen mention of width restriction of 2.5m, but again, I see boat manufactures making 2.6m Ribs.

What's the simple truth on this? I've just sold my 5.5m rib and thinking about a 7.5m, but must be able to trail it as I like to visit different places.
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Old 21 June 2018, 11:35   #2
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Max width with allowable overhang is 2.9m
Length isnt quite so simple as certain areas are a bit grey but in general by the time a boat gets to an illegal length is usually overweight or width
The rya provide a decent factsheet about trailering and roof racking boats as they carry certain exemptions that other trailers dont.
Search google for "trailering and roofracking rules and regulations" it should pop up for you
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Old 21 June 2018, 12:27   #3
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Couple of things you may not have thought about, 7.5m is proper 4x4 territory, 4 wheel trailers, worrying about width when driving etc.

My 6.8 is 2.9m wide and over 8m long on the trailer. I do miss the ease of a single axle trailer, smaller car etc. I have 2 cars now because of the above, I have a 4x4 purely to move the boat as I commute 70 miles a day.

If I was buying now I would seriously consider a 6.5m as that will go on a 2 wheel trailer, "normal" car will tow it, storage is usually much less under 6.5m etc.

A bigger boat is certainly good if you are prepared to accept the above, will never do you wrong when rough and will be a massive upgrade on a 5.5, but do will a 6.5 or so.
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Old 21 June 2018, 12:55   #4
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The 7mtr length limit is for the trailer, excluding the drawbar, it's not the length of the load. The load can overhang a considerable distance at the rear and 305mm each side. The rear overhang has various rules depending on its length of overhang. You may or may not need to mark it.

The drawbar on a boat trailer is often non-existent so this will limit your towing length. A clever person will choose a trailer with a long drawbar as part of its structure.
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Old 21 June 2018, 13:07   #5
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I have posted this before ....

This is the link to the official government guide.

https://www.gov.uk/government/public...of-the-trailer

<<<. Exceptionally, where the trailer is specially designed to carry long loads (eg one or more boats, gliders), the 7m limit does not apply.>>>

As the government site says in plain English...boat trailers are explicitly excluded from the length restriction, nothing to do with overhangs as far as length is concerned. There are width restrictions and they are easy to find and work out. ;-)
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Old 21 June 2018, 13:46   #6
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Quote:
Originally Posted by beamishken View Post
Max width with allowable overhang is 2.9m
Length isnt quite so simple as certain areas are a bit grey but in general by the time a boat gets to an illegal length is usually overweight or width
The rya provide a decent factsheet about trailering and roof racking boats as they carry certain exemptions that other trailers dont.
Search google for "trailering and roofracking rules and regulations" it should pop up for you
Thanks Beamishken - that's very useful. As you say, 2.9m width and the length will come down to overall car+boat or weight.

Obviously the people saying 7m max are looking at trailer and not considering the allowable rear-overhang.
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Old 21 June 2018, 13:47   #7
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Thanks
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Old 21 June 2018, 13:55   #8
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Quote:
Originally Posted by dubrus View Post
Couple of things you may not have thought about, 7.5m is proper 4x4 territory, 4 wheel trailers, worrying about width when driving etc.

My 6.8 is 2.9m wide and over 8m long on the trailer. I do miss the ease of a single axle trailer, smaller car etc. I have 2 cars now because of the above, I have a 4x4 purely to move the boat as I commute 70 miles a day.

If I was buying now I would seriously consider a 6.5m as that will go on a 2 wheel trailer, "normal" car will tow it, storage is usually much less under 6.5m etc.

A bigger boat is certainly good if you are prepared to accept the above, will never do you wrong when rough and will be a massive upgrade on a 5.5, but do will a 6.5 or so.
Thanks, yes, very aware of this (I have a big 4x4, 3.5Tonne towing capability). My 5.5 was 7m on the trailer (probably too big a trailer).

I've also found that some 6.8's come within the weight limit of a single axle trailer, so will be considering that when looking. I'm considering anything from 6.8-7.5.

I've heard a lot of people say that going to a twin axle makes life much harder but, really? Apart from the extra 1m I will probably have (and obviously the extra weight of a bigger boat), why will a twin be that much harder to deal with?
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Old 21 June 2018, 13:58   #9
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Quote:
Originally Posted by totallydave View Post
Thanks Beamishken - that's very useful. As you say, 2.9m width and the length will come down to overall car+boat or weight.

Obviously the people saying 7m max are looking at trailer and not considering the allowable rear-overhang.
It's nothing to do with overhangs as far as length is concerned.
The 7 meter restriction does not apply to boat trailers.

To quote HM government...

"Exceptionally, where the trailer is specially designed to carry long loads (eg one or more boats, gliders), the 7m limit does not apply."
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Old 21 June 2018, 14:10   #10
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It's a bit of a confusing minefield but the glider fraternity seem to be up to speed with it.

If your trailer is constructed for the purpose of towing a long indivisible load e.g. a boat, then the maximum length of the towing vehicle shouldn't exceed 9.2m and the overall length of the combination of vehicle and load should not be greater than 25.9m.

https://members.gliding.co.uk/wp-con...3/Trailers.pdf
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