How Long is the Extension on the Roadmaster Hitch Spare Tire Mount?
Updated 12/08/2025 | Published 11/22/2025
Products Featured in This Question
Question:
I use a 6inch blue ox reserver for my flat tow vehicle. Do these come with a 6inch ?
asked by: Brian
Expert Reply:
Hey Brian. The Roadmaster Hitch Spare Tire Mount with 2" Receiver Opening item # RM-195225 for a 2" hitch or item # RM95MR for a 2-1/2" hitch will give you an 8-3/4" extension from the hitch pin hole to the closest point of the carriers.
This 8-3/4" measurement is only to the closest point of the Spare Tire Mounts so it's already as long as the Blue Ox item # BX88265 you referenced. The hitch pin holes for the tow bar are an additional 2" - 4" past the 8-3/4" measurement. You can also reduce this distance by 3-1/2" if you use the 2nd hitch pin hole on the Spare Tire Mount receivers.
I've attached a couple of dimensional diagrams below to illustrate these measurements. There's quite a bit of adjustability with these Spare Tire Mounts as far as distance away from your RV's hitch pin hole.
Another nice perk about the Roadmaster Hitch Spare Tire Mounts item # RM-195225 and item # RM95MR is they only reduce your hitch's capacity by 33-1/2". Your Blue Ox item # BX88265 reduces it by 50%.
What size hitch does your RV have?
You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.
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Product Page this Question was Asked From
Roadmaster Hitch Spare Tire Mount with 2" Receiver Opening - 2-1/2" Hitches
- Spare Tire Mount
- Hitch Mount
- Universal
- RV
- Standard Finish
- Roadmaster
more information >
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on Spare Tire Mount
Jerred H.
12/8/2025
Hey Brian, what ended up working with your Blue Ox setup when comparing it to the Roadmaster spare tire mount options? Your update could make it easier for the next person trying to match their tow bar and hitch extension.