big track = fast srx in deep snow
the clipped every 3rd is to save some weight of the track, if your running stock 9 tooth drivers, you can go up to a 1.75" lug, BUT, you will need to remove the front heat exchanger protectors up front, I always remove the tunnel protector strips as well, if you dont have studs, you dont need them.
The benefit of running a clipped every window track is if your running anti-rachet drivers, these drive the track thru the windows as well, and lets you run the track looser witout racheting the track.
I love the 1.5-1.75" track on a srx, if you have good clutching/ suspension set up, you will eat up about any sled out in a field of fresh snow, they throw great rooster tails too!! It will take a tad bit of topend off the sled, but who cares when your 10 sleds ahead if you can only go 100mph, instead of 115mph