I asked specifically about that size... I'm just relaying what my advisor told me. I doubt the change will make any difference (cause an issue), but it does give JLR an out if they want to challenge a warranty repair.I think JLR is looking out for the dude rolling on 26s, not a 255/50R20 tire which has the same outer dimensions of the 255/40R22 tires offered on the I-Pace. My understanding is that in US the manufacturer has to be able to prove the change contributed to the failure. That being said... I'm an engineer, not a lawyer. As an aside, I just joined the 255/50R20 club this week.