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Thread: Tyres - the more I read the less I know

  1. #11
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    not sure how 'original' you want your resto to be but if you're going to drive it I'd ditch the original rims, get late defender rims and run 235-85 / 16s. Only rivet counters will know the difference and you'll get tubless rims and tyres you can replace pretty much anywhere in the country. I've been down the 7.50/16 path and IMO its a money pit that's not worth the effort.

    Cheers,

    Adam

  2. #12
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    Quote Originally Posted by akelly View Post
    not sure how 'original' you want your resto to be but if you're going to drive it I'd ditch the original rims, get late defender rims and run 235-85 / 16s. Only rivet counters will know the difference and you'll get tubless rims and tyres you can replace pretty much anywhere in the country. I've been down the 7.50/16 path and IMO its a money pit that's not worth the effort.

    Cheers,

    Adam
    If on the other hand you intend to do your own repairs on the other side of Woop Woop, tubed tyres on standard rims can be seated and inflated with a small compressor.
    or even with a hand pump. You don't need an explosive force.
    Picture taken at the Montecollina Bore on the Strzelecki track.
    .W.
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  3. #13
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    Tubes are easily sourced we installed 7.00 x 16 to prevent wrinkles as advised by the local tyre service outlet I have used for 40 years also a small amount of talcum powder to assist tube to tyre friction. My tyre installer also stated to be careful dropping pressure he recommended minimum 20 psi in difficult conditions.
    Hope this helps.

  4. #14
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    A few days ago I used 12-15psi on tubed 7.50s on standard rims with no issues, and have been doing similarly for nearly fifty years. Those who think you need 'safety' bead retainer rims (especially with tubes) are ignoring the fact that these were safely used for fifty years and are still widely used. Yes, they add a margin of safety, but the margin is only a small one, only significant when the driver is engaging in extreme side loads with abnormally low tyre pressures.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  5. #15
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    cool, try getting a tyre shop to do anything with your tubeless tyres on tubed rims. Or try buying a 7.50/16 tyre the same day in most capital cities. Sure you can 'make it work' but if you actually want to drive your car and not have every trip turn into a leyland brothers episode you should consider dragging yourself into the 21st century.

    As for repairing a tube on the side of the road, I can have a plug in a tubeless tyre and be back on my way in well under 15min without even removing the wheel from the car. I'll take the pepsi challenge with a tubed rim any day of the week.

  6. #16
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    Really need a dislike button on this forum..

  7. #17
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    Quote Originally Posted by JDNSW View Post
    A few days ago I used 12-15psi on tubed 7.50s on standard rims with no issues, and have been doing similarly for nearly fifty years. Those who think you need 'safety' bead retainer rims (especially with tubes) are ignoring the fact that these were safely used for fifty years and are still widely used. Yes, they add a margin of safety, but the margin is only a small one, only significant when the driver is engaging in extreme side loads with abnormally low tyre pressures.
    Interesting you mention pressure with tyres and tubes......Len Beadell , for hundreds of miles drove on next to no tyre pressure (with tubes) to enable him to get through the bush. He mentions it many times in his books.....he didn't have the choices we have now.

  8. #18
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    Quote Originally Posted by ramblingboy42 View Post
    Interesting you mention pressure with tyres and tubes......Len Beadell , for hundreds of miles drove on next to no tyre pressure (with tubes) to enable him to get through the bush. He mentions it many times in his books.....he didn't have the choices we have now.
    Of course he also repaired multiple tyres every night during his road building surveying trips across the desert (I think he carried four or more spares due to the number of punctures and now doubt multiple spare tubes as well) and all pumped by hand. But he would have got those punctures tubed or tubeless, high pressure or low pressure I suspect where he was going. I don't remember him loosing any tyres off rims however.
    Lakey

    1976 SWB Series III Soft Top (AKA the big Meccano set)

  9. #19
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    The area he was in has a lot of types of vegetation that has hard spikes to discourage animals that would eat it. And he was not driving on roads - he was driving cross-country. Some of these punctures would have been self sealing with tubeless tyres, but a lot would not have been. Tubeless tyres would undoubtedly have been easier to repair minor punctures, but would have presented issues getting back on the rim with tools he had to hand. And major repairs which he was able to sleeve would not have been feasible if the repair needed to be airtight.

    Which reminds me of a tyre issue I encountered nearly sixty years ago. I was in Roma, and out workshop mechanic was having issues of severe front wheel shimmy on a 2a 109. Despite getting all the free play out of the steering and checking the alignment and swivel preload, it still did it.

    Eventually tracked it down - one front tyre was about 3/4kg out of balance. Removing the tyre revealed a sleeve repair on the inside of the tyre almost half the circumference.

    In those days, wheel balance was only ever even thought about for high speed cars. Most tyres were sold and fitted by the local garage, and they rarely had either the equipment or expertise to balance wheels. (Although even by the early sixties this was beginning to change)
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  10. #20
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    Quote Originally Posted by whitehillbilly64 View Post
    I fitted SP Dounlop Roadgrippers F (112) 7.50/16 with Tubes on my S3 SWB daily.
    Very happy with them. Real good in our continuous Northern NSW Wet weather.

    whitehillbilly
    I also have Dunlop Road Grippers SP in 7.5x16. It took a while to settle on something safe, drivable, but sympathetic style to original, decided on these. Purchased new last year, no problems at all sourcing. On a S1 but running later series wheels (272309). I even have them nitrogen filled.
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