Tubes In Tubeless Tyres

Blockley aren't advising that 205/70 tyres are necessary they are only saying that most E3/E9 owners prefer a wider tyre, probably for aesthetics more than anything. The original steel spare is a 6J and is fitted with a 175 HR14 Continental tyre that is quite possibly the original. There is nothing wrong with the wheel/tyre combo, it's just tyre fitters who can't be bothered spending the time to install them. Blockleys own tyre fitter says he has no issues with these tyres on 6J rims, he just expands them with tubes as I did prior to fitting but he expands them about 2" beyond the rim width whereas I kept them at or just below 6" so maybe I was being a bit too cautious. I'm going to leave them on the car for a few months with the tubes then I think I'll have them removed and refitted minus the tubes as I'm sure by that time the beads will have taken a set at the wheel width.
 
Recently ran into the same issue when fitting Vredstein vintage type tires on the Porsche Fuchs rims. it’s a well-known issue and that it requires modification to the rims, particularly with regard to where the inlet valve is. Rather than modify the rims, we simply put tubes in the tires apparently not recommended for track but for daily use or sometimes use it’s the best if it’s going.
 
I never thought to check the handbook and was surprised to see that it states tubes to be fitted although this is in reference to steel wheels. I'm not sure why this would be a requirement, surely by the early 70's tubeless wheel/tyres were common place ?.
I checked the spare and it is indeed a tubed tyre, 175 HR14 (Continental) so could possibly be the original item (and, no I won't be using this tyre as it is obviously past its best!!!)
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