The factory actually says the limit for all X5s towing without trailer brakes is only 1650lbs. I've towed about 3,000 lbs without brakes and it wasn't terrible, but panic stops were not confidence-inspiring. Going down long downhill stretches i could see overheating the brakes might be a danger.

European trailers are very different than in the USA. They have better brakes and lower tongue weight. It's not really apples to apples.

Anyways, the factory says the V8s are rated at 6,000lbs capacity, so just make sure your trailer brakes are good and your truck tires and brakes and brake fluid are all good, and you should be fine. I agree that going a bit over 6k probably isn't going to be a big deal.

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2003 3.0 5MT Topasblau
Purchased in 2016 and sold in 2024
2012 35d Platingrau