ProfJohn,
Great informative post.
You are correct i'm getting on a bit now (not too much but a bit :woohoo: ) so my license is from before 97, always worth checking though.
otherclive said:
If the OP were to consider BMW for towing it's essential to ensure that the car to be purchased has all of the necessary fitments to tow without detriment to the powertrain. Some BMWs (even X5s) are capable of towing large loads but they must have the right ancillary equipment fitted before delivery from the works. To fit the equipment retrospectively is eye wateringly expensive if the car is still under warranty and you want to retain the warranty. There will be those who have towed quite successfully without the equipment being fitted, but I'm just stating the position as per BMW's own recommendations. Much will depend on what is being towed, where, and what the car's powertrain is.
Hi Clive,
I was told this by a few dealers and specialists, the BMW "Tow Kit" is a bit of a white unicorn, the dealers that say they can get hold of the kit charge crazy prices.
From my investigations it seems for my car (2007 335d) the "tow kit" is a add on intercooler and a stronger radiator fan.
I looked into using aftermarket products as they were a fraction of the price, but figured that as we're in no rush when we're towing i will use my OBD tool to monitor air intake, engine oil and tranny oil temps.
The only time they crept up was ascending one of the alps higher, steeper roads, it didn't go high enough to concern me, but as it's a holiday we found a nice parking spot, pulled over and had a cuppa.
I've towed through a Greek summer seeing 40c ambient temps, all oil and intake temps were fine.
But then i've also been on tracks (not with the caravan

) for 20min + sessions at 40c+, the only problem then was brakes, again i just pulled into the pits, had a natter and a cuppa till they cooled off and went out again.
It can't see a scenario where the car will overheat it's fluids to the point of causing a problem, be that towing or on the track.
I can see a scenario where damage would be caused if someone tows a LOT at really pushes the time/distance between oil changes.
As i do my own spannering, i changed all the fluids after the trip (including tranny fluid and filter).
I tend to do a oil change every 3k to 5k or so and other stuff like the tranny fluid every year.
On my previous cars (all petrol) i just used whatever oil was on special offer (at the correct viscosity), so it was very little expense wise.
With the diesel there seems to be concern about the DPF life so i'm trying LL04 oil, it's a fair bit more expensive than i'm used to paying so i'm sending the old oil out for analysis, my plan is to see if 10k is a more realistic opinion.
Michael,
I can understand your concern, as i've previously stated, my intention was to give other opinions to the op rather than the usual 4x4 tank recommendations.
I used my car as an example to show that you can successfully tow a large caravan without going the 4x4 route.
I'm not saying it's a good choice for everyone, but it is another option.
As i say,i'm a responsible adult and i feel that i informed enough to make my own choices, be that mechanical knowledge and experience or driving, driving physics.
If i felt for 1 second my outfit was not safe there is absolutely no way i would tow with it, simple as that.
I can understand your insistence on the law, especially with people offering advice to new members on a public forum, personally i do not feel that my outfit is illegal.
But IF it is, i feel my experiences and knowledge of how the outfit handles through vastly different road types and weather mean that for me personally outweighs any risks of prosecution.
Genuine question.
Does anyone know if anyone has ever been prosecuted for having a caravan (lets round it up and say) 100kg (MTPLM ) over the cars maximum tow rate?
As i say, i'm not playing clever clogs here or trying to justify anyone breaking the law, i'm just curious.