I lost a wheel on my 2014 Montana 3402 on 7/19. It is a SenDel T04-66867BM that is 16x6 with 8 spokes and 8 lugs with a 3750 lbs. @ 110 maxload. Please let me know if you have one for sale. You can see a picture and the specs at http://wheeldealsdirect.com/95251/sendel/t04. Thanks.
If you are looking for a used one rather than buying new, your best bet would be checking RV salvage yards. I remember people posting about specific salvage yards here in the past, but have no idea who or where they were. Not something someone would likely have laying around the garage.
Assuming the wheels are what came standard on your Montana and you are the original owner, they are guaranteed for life by Tredit. You might give them a call and see what they have. I would think the 2014 style rims are still available. If not they will replace two of them (if cracked) for no charge. Otherwise a new rim is about $69.
Carl (n Susan) Youngren There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
Sendel stopped manufacturing T04 in 2015. Any luck finding a replacement? My loose wheel picked a fine time to leave me too. Across WY on i80 in snow & slick hwy just west of Laramie last Veteran's Day! Bumming to find match. Not finding any success in salvage yards.
I couldn't find a new or used T04-66867BM. As you said, they are obsolete. So I bought two new T12-66867BM from recstuff.com and two new center caps (CCS047). The T04s and T12s aren't exactly the same but close enough that no one has noticed the wheels on the starboard side are different from the port side. I bought new 2.50 in. 1/2-20 chrome lug nuts from amazon.com, MR3204 Lug Nut Set. I still have the extra used T04 wheel and center cap in my garage. Let me know if you need it.