I've owned my 4R for almost exactly 1 year, bought it new in 2018. My commute is relatively short, so I've only put about 8500 miles on it, 1000 of which was a long road trip.

No lift, only mods have been a pedal commander and swapping out the stock SR5 rims for those from a Trail.

Anyway, I've recently noticed that there's a shudder I can feel in the seat, usually happens right around 40 mph, doesn't seem to be all the time and I don't have any of the steering wheel vibration I've seen described in other threads. Past experience leads me to believe it could be related to the driveshaft, but I'm curious if anyone else is having or has had this issue.

Thanks.