Appreciate some advice on what might be the problem, 18 year old BJ A - Max trailer - 4 wheels. Recent full service by trailer specialist (not BJT). Tyres 5 years old. Did not check pressures before setting off, but certainly not low - could have been too high? The trailer sits a little higher at the front given the height of the tow bar on the car? Was told this was not a problem by BJT and the trailer service chap! My son Sam was towing the 7 up to Scotland yesterday and had two blowouts.. see pics below - just 7 with some luggage on the trailer, so not overloaded? Think car position on trailer ok, but did not measure weight at tow bar end? Tyres that went were both front tyres on either side of the trailer. First incident on M1 - drove slowly on 3 wheels to a tyre place who had a replacement - put existing spare on trailer and replacement kept as new spare. This blowout severely damaged the mudguard which had to be cut off! Is it legal to drive without a mudguard? See second pic below - cannot tell much from this - apart from what looks like delamination between the steel cords the tread? Second incident happened a few hours later! This looks as though there is delamination between the steel cords and the tread? Never heard of the tyre brand but says on the side manufactured by Deli Tire (not a typo!) Thinking we may have just got unlucky with rubbish tyres? Ordering 5 new ones to be put on trailer for trip home. Any insights most welcome! Thanks Garth First blowout Second blowout