Hello
The 10.5 works perfectly on the back - There is loads of room in the back arch, even when fully lowered - The issue we've had recently with the 9.5 is availability - There were none - I've emailed Judd now.
The 275/40 is too big for the transporter, and can/will rub dependant on height - The 265/40 is correctly rated and works when lowered.
Either Dm me directly on here with your contact details or use the contact form on the website - We can advise pricing and correct offset