Synchrones
Spent 2 days with Landrover UK people last May and we discussed tires. They are also frustrated with the tire problem for the 19" rims. We discussed Synchrones and they didn't have any problem with them, but admitted they wished someone would come up with a good 19" with better offroad tread. Problems with reliability and traction versus quiet ride. Most people with HSE's don't take them offroad. Some of us (ask NWOODS about my LR3) just do it...Did have a little pull afterwards, and when I took to dealer, he said alignment was OK, but he rotated the tires and the pull went away. I guess the radial belts shifted while the tires were under extreme sidewall stress.
Don't be afraid of the synchrones. NWOODS can attest to how well the tires worked the day we rode together. Even though I was afraid of sidewalls rolling while we were tilted 45 degrees, they held up well, and once we got to rocks, the tread bites well. Yet once on the road, they are remarkably quiet. I did, however get 27k miles out of my HP's and took a remarkably rocky trail at 27k miles. Worried about them getting cut, but the HP's held up better than I expected. They are just too loud.