From Bubba's website:
Which Bubba Rope do I need?
There is no official working load limit on using Power Stretch Recovery Ropes. However, from thousands of successful recoveries we recommend that the best method in selecting the right rope is by multiplying the weight of the stuck vehicle by 3.5 or 4 times and then selecting the rope that has a breaking strength that is equal to or higher than that number. For example: if you are going to be recovering vehicles similar in size to a Jeep which weighs approximately 4,000 to 5,000 lbs. our Renegade Bubba Rope with a breaking strength of 19,000 lbs. would be perfect for that application. Similarly, half-ton pickups that usually weigh around 6,000 lbs. the best fit would be our Original Bubba with a breaking strength of 28,600 lbs. If you still have questions of which rope to select just call or email us and we would be happy to recommend the best fit for your use.
Just a note...too big of a rope and you get less stretch which means less "snatching" power....