They now have Irok radials in 37" I think /forums/images/graemlins/thinking.gif
Its hard to know what your looking for though, you have ssr's and iroks in the lineup, ones a steel belted radial, the other a bias (if you are talking about the regular iroks). If going bias I would get the TSL's, I am not sold on the bias Iroks and they have less tread on 'em /forums/images/graemlins/thinking.gif