215/60 Pirelli CN36 on 7R without tube? Spacer?

[swisscheese]

You, most certainly.don't need tubes. You will run a chance of burning the paint off your rear quarter panels about 3" above each rear wheel opening, though.

Regards

Jim

hi Jim,

are you referring to the standard 7" Fuchs, or the 7R? I know the standard 7J would give issues, but have read 7R would work with 215/60's? (and also that the Avon is a wider tire than the CN36 in the same size category)

[swisscheese]

If the older humpless Fuchs wheel due to design require tubes and if tubeless tyre design (particularly those of 60 profile should not have tubes fitted these days) would motor insurance companies have a reason to invalidate a policy in the event of an accident if the owner and their fitter had gone ahead used this configuration? Similarly would use of tubeless valves in modified or unmodified tube rims be grounds for them invalidating an insurance policy? What are the legal and financial potential implications for owner, driver and fitters unvolved in that scenario; particularly if there was a personal injury or worse? These are just some questions for suitably qualified experts in a variety of fields that might have a bearingThis seems to be a safety critical matter because I have seen tyre manufacturers publish information on rim and tyre configurations but I'm no expert on these hence these are just some questions for suitably professionally qualified people.

For my understanding: what would be against fitting a tube in a "tubeless" tire like CN36? Wouldn't it just be an extra bladder to prevent air escaping? (if ever that chance exists, only on track-usage, which, btw, could be another reason why an insurance company would invalidate a policy..?)

[Jim Breazeale]

hi Jim,

are you referring to the standard 7" Fuchs, or the 7R? I know the standard 7J would give issues, but have read 7R would work with 215/60's? (and also that the Avon is a wider tire than the CN36 in the same size category)

I’m referring to a 7R. 7Rs place the outside edge of the wheel rim 1/2 inch closer to the body. Add a spacer and a much larger than standard tire and you are looking for trouble IMHO. Results do very car to car, though.

Jim

[Toddlaunchbaugh]

I am just bought these tires and I bought the maxi lite 7rs and deep sixes . The maxilite 72# have a slightly different back space, I think 47 mm instead of 49.
I have a 72 and I will need at least 20mm spacers to clear the oil line on the right side and the sus. Bolt,

I am going to try the same tire on the phone regular 7 and see which looks or fits best.

If the oil line is an issue , I will have brand new tires and wheels for sale,

[Longballa]

I run the 215 CN 36's on narrow body cars with 7R wheels all the time. Fit great and look great. 7mm spacer to clear the spring plate bolts. The fender lips are rolled. Never with a tube.

[Toddlaunchbaugh]

Long Balla
It looks like I need about 10 mm on these maxilites to clear the rear oiline (note these maxilites seem to have a different offset than 7rs . However I also found out that wheel itself is hitting the brake caliper even with 10mm of spacers

I am going to try to fix these 215 back on the regular 7s that are on the car, they look like they will fit

[blue72s]

Interesting Steve. I've just found Michelin's version from the DDK forum, see below:

Are the early Fuchs (deep 6, 7R) one of the 'special type rims' (Flat ledge on outside)?

[2.5MFI]

I run the 215 CN 36's on narrow body cars with 7R wheels all the time. Fit great and look great. 7mm spacer to clear the spring plate bolts. The fender lips are rolled. Never with a tube.

Scott set me up with a set of CN 36's on my 72. Stock fenders and 215 CN 36 on the rear with 7R's and no problems.

[swisscheese]

Scott set me up with a set of CN 36's on my 72. Stock fenders and 215 CN 36 on the rear with 7R's and no problems.

hi Mark, thnx.
What spacer was used? No grinded bolts or rolled fenders? Any photos of your set-up?
Tom

[blue72s]

Am I reading the old document correctly that Michelin only marked the 914 wheel as suitable for tubeless with the solid black ∆ annotation as explained in in the footnote? I don't see the same annotation for 911 rim unless I'm misreading it?

Maybe the standard 914/4 wheel was a special type rim (with humps)?