In the 1971 Dodge service manual. It says that 6" wide wheels require either 11" drum brakes or disc brakes. Anyone know why?
Thanks.

can you post a picture of the actual page/comment?

I believe it is the other way around .....
the B & E body cars with 11" brakes STANDARD had 14x6.0" wheels STANDARD
ordering F70-14 tires on a /6 or 318 car required "rallye suspension" which also would get you the 14x6.0" wheels

disc brakes also may have required the 14x6.0" wheels

but all of the above could've been ordered with "Rallye" or "Road" wheels which were 14x5.5"

This is how it appears in the manual...
"** 6JJ & 7JJ rims require 11" drum or disc brakes"
What you say, makes sense, I wonder if the factory worded it wrong

What they are saying is if you want to have 6" or 7" wheels then you need to buy better brakes or we won't sell those big wheels to you. Bigger wheels and tires haul more weight and they want the brakes upgraded.

Not required any more than 3.54 gears require drum brakes, or 4.10 gears require disc brakes.

They're saying they delivered them that way.
Not that nothing else will ever work.

What you say also makes sense, but how would you go about ordering the 6" wheel? Also if you ordered any of the four following 1971
B - body tires (G78 x 14, H78 x 14, F70 x 14, or G70 x 14) which comes with 6" rims, it does not tell you anywhere that I could find, that you are required to purchase H.D. brakes (aka 11"), or disc brakes.

What if it's the other way around? If you want the good brakes, you must buy these wheels & they're not available without the brakes? There might be some brake clearance issues with smaller wheels.

what body & model are "WE" talking about?

you couldn't specifically "order" 6" wheels - the only wheel OPTIONS were the "Rallye" & "Road" wheels
when larger tires were ordered, they included the wheels that Chrysler spec'd for that size tire
when significantly larger than stock tires were ordered, the guides specified larger brakes and/or suspension were required

You don't order a car from the service manual. If a certain wheel tire, or brake combo was wanted then when the dealer would speck it out that way. But , I guess if you had such car, and wanted to install something different, the service manual was telling what was required.

I think 6bblgt is correct in stating that on B and E body's with either H.D. sups., HD brakes, or disc brakes got the 6" steel wheels unless you ordered the Rallye or Road wheels. I was incorrect in stating that there were four different 1971 B - body tires that got the 6" rim as std. I think that only the G70 x 14 got the 6" rim as std., but I found a side note stating that G70 x 14 tires required HD susp. So now I think that accounts for all 6" rims end up getting HD brakes or disc.