Loud snoring while laying down is pretty common especially in labs, you mentioned he has his head on the console while riding and that is when he is wheezing, does he wheeze at other times or just when he has his head on the console - it could be if this is the only time he is wheezing that it is the position he is in - if he is wheezing while in other positions at other times during the day - night, then you need to take him into the vet....good luck