I put the Voyager conversion kit on my wife's Yamaha V Star 1300. Took a few iterations with shims and test rides to get it perfectly level - but past that challenge now.
What remains is some reluctance on the part of this configuration to make right angle turns. Whether turning from a side street and accelerating into traffic, or slowing to turn at a right angle to a side street - I can feel the bike slipping on the front tire (which certainly wasn't designed to turn the bike in a perfectly upright position).
I can slow WAY down (to around 10-15 mph) and it doesn't slide, but I can't help thinking more tread on the ground that is designed to be upright would be an improvement in this bike configuration (in other words - a car tire).
I did talk to MTC Voyager. When asked, "is there any adjustment I can perform to avoid having to reduce my right angle turn speed by half (from a normal motorcycle speed) to avoid the front tire slipping?" The MTC Voyager installer's response was "no".
I think a wider contact patch on a tire that was designed to remain upright would help, but don't know what size tire to look for nor has anyone come forward to verify that this improves matters with a trike kit. The MTC Voyager guy did say some customers had done it, but none had reported back to them after the fact to verify whether it was better, the same, or worse.
Has anyone tried this?