today i was towing my boat to winter storage set it all up to tow flused the engine through then pumped the tyres up and as itook the pump off the valve came out of the tyre so i had that fixed but as i was driving to the main express way which has higher speed limit the other tyre blew how unlucky but very lucky what if it had happened at 50 to 60 mph instead of in atraffic queue so be warned check all tyres on all vechicles