are the car radials used on the front of MX quads heavier than a stock atv front tire?

 

Not really (I don't think) They weigh 14 lbs each on Douglas red labels. (Just went in the basement and weighed my new ones.)

 

No. Well i didn't actually weigh them, but i have a set of Marshalls on .190 Douglas rims and they are a lot lighter than the factory rim with factory tire. They are also lighter than a trail tire with a Douglas rim.