Thank you very much to everyone for taking part in my problem. Today those large size front tires were replaced with the original size. True, I had to go to the nearest workshop of this company located 140 miles from my home.
P.S.
I was wondering that you write tyre instead of tire. Thanks to Google for an explanation that the "Tyre" is the preferred term in British English, used in UK. Thank you, British for help. I'm Ukrainian who live in USA for 30 years. My parents were evangelical missionaries who gets in trouble in Soviet Ukraine from atheists' communists and because of that USA give them Status Refuges. Sometimes some criticize me for my English (you didn't), but I say I do not speak English because I speak American language where are all nations speak to make sure they are understanding each other's. Thank you for your hospitality.
Would like to participate in this forum much longer, but problems to write here from my cellphone of IP in spam list. Also tried to make avatar, but image size need to reduce. I know in some forums its platform doing automatically, but not here because need to found image program to do that. Also trying to make signature with the name of my motorhome and link to a picture but get error message "This is a block of text that can be added to posts you make. There is a 255 character limit" even I removed link and wrote just the name "Forest River Sunseeker on 2019 Ford Transit 350 HD". I understand that you protect your platform from SPAM, but it's inconvenient to participate like that.
Thank you for all, anyway.
Konstantin Tkachenko
Citrus Heights, California.
Here is a photo of my motorhome train -
https://photos.app.goo.gl/KDw3N52mQPBSwkBm6