Rear tyre wear on lowered caddy

[Brother Albert]

I had my 66 plate Caddy Maxi professionally lowered by Wolfsberg Vans in Manchester several years ago. I've recently had quite severe rear tyre wear on the inside edge. I called a reputable tyre specialist for advice and to get it checked out and got ripped to shreads on the phone. The guy told me that as I had it lowered I've turned a commercial vehicle into an "uncomercial" one, adding a bit of a laugh as he said it. Suffice to say I'm not giving them my business.
Mike at Wolfsberg said that most tyre places don't know how to track a lowered van properly, so my question is where in the Gloucestershire area can I go to get the issue sorted without being criticised for having a lowered van and having the audacity to put heavy bags of sports kit in it.

[Giddy]

Chris Mullins Tyres in Gloucester my go-to place for the wheel alignment.
Bear in mind, the rear end is not adjustable, it's a solid axle. So you may have some other suspension issues, like the rear lowering wasn't done correctly or a bent axle.

[Brother Albert]

Well, it was Chris mullins tyres that treated me like a child and ripped me a new one. Wolfsberg vans are a premier outfit, so I will take their word over the local guy who entertains himself by insulting potential customers.
That said, I had a new set of rear tyres fitted and no sign of rear wear ATM. Probably due to the weight I carry, so I am currently only putting what I really need in each day and avoiding a "take everything just in case" approach.

[Rob.]

It's been a few years since I went there, but FCM Alignment in Bristol were sound.

https://maps.app.goo.gl/yR3mGaNxUpzpTh6T6

[DeanNPT]

Well, it was Chris mullins tyres that treated me like a child and ripped me a new one. Wolfsberg vans are a premier outfit, so I will take their word over the local guy who entertains himself by insulting potential customers.
That said, I had a new set of rear tyres fitted and no sign of rear wear ATM. Probably due to the weight I carry, so I am currently only putting what I really need in each day and avoiding a "take everything just in case" approach.

I had mine lowered by Wolfsburg also, and have never had any issues. As was said above the rear geometry is fixed by the solid axle. It may be worth checking the rear wheel bearings, because if they are on their way out when you have a lot of weight in the van it can result in effectively giving you some negative camber - which will rip the inside edges.