I am contemplating the purchase of 4" 40,000 lbs or 3" 30,000 lbs tow straps for my TJ. The difference in price is negligable. I want to put at least two in the toolbox in my jeep. Do I really need 40,000 lb straps? I dont plan on pulling dumptrucks or tractors. I think the negatives for getting 40,000 lbs is the amount of pull it takes to get the elasticity working for you may be too great and will jar the two vehicles. Also the bulk of the extra inch is just more crap in the toolbox I really dont need. Anyone have any input on this subject, or actually have alot of experience with both sizes? Thanks.