Thank you for letting us know about the weight issue. We went to the warehouse and weighed the 3 largest sizes of the Roctane XD tires and found the following:
28×10-14 37.3 pounds
30×10-14 42.4 pounds
32×10-14 53.3 pounds
The weights in our spec sheet are the original weights when the Roctane tires were first released about 3 years ago. After receiving your e-mail and weighing the current production tires we asked our tire engineers for an explanation We had some leaking issues with some of the first production runs and the tire engineers have made many spec changes to the tires to correct the problems. The added more rubber to the tire construction to make the tire more durable, puncture resistant and longer lasting. We did not realize how much weight had been added over the past 3 years. The good news is that we have a much better tire now, bad news is that is heavier. The weights listed above are the current weights. We will change the information on our web site to match. Thank you for bringing this to our attention and sorry for the inconvenience.