R1200RS + R1250RS Forum
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Sun Nov 08, 2020 6:58 am
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Zitat von Batts im Beitrag #1 There are lots of posts on this subject in the Forum but my tyre guru recommends 34 psi front and 36 psi rear (cold reading) for a solo rider. This is a compromise between comfort and having a reasonable amount of tread surface on the road. |
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Do an online search. I continue to have problems posting links so you will have to add the "http.www" bit but try this: 19 Plate R1250RS Exclusive with "bells & whistles" & full colour matched luggage |
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Yes; it seems very weird that a single tyre pressure should be quoted for any load. Also that the old 36/42 psi or 2.5/2.9 bar should be pretty universal across light and heavy bikes; very odd . Basic physics seems to make that feel wrong. |
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Zitat von pauld im Beitrag #6 It gets very complicated. If you prioritise changing the pressure for load, what about ambient temperature? For your average motorist, tyre pressures are advisory, only checked during a service, so the makers are going to have to have a compromise that is safe in most conditions. For those pushing grip to the limits on a track then they are going to use a different, more bespoke approach. Just as an example of the maths involved, simplified to get some indicative graphs, have a look at https://www.arden.org/misc/pressure.html The temperatures seem to be in some foreign units. A graph showing how pressure varies at different ambient temp in an 18" car tyre:  |
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Pressure is a variable with temperature, but also with altitude. Different road surfaces also need different pressures. Having said that, people get a bit anal with road bikes and start telling others that they can feel the difference of half a psi, what a load of bullsh1t. Perhaps someone on a track bike that races the same track every weekend at the same ambient temperature, with the same amount of humidity and the same weight of fuel in the tank, might be able to feel a couple of psi difference.
2020 R1250RS, 2018 Ducati 939 Supersport, 2018 Ducati Monster 821, 1967 Ducati 250 mk3.
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Zitat von himoverthere im Beitrag #8 Whar sort of aircraft was that landing at 300mph? |
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IMHO, tyre pressures are a very subjective thing, as countless people on the internet have suggested, and I would not pretend to know what is right and what is wrong for each individual, their bike, and their riding style.
R1200RS SE Sport
S1000XR SE Sport R1200GS TE |
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Zitat von Ray im Beitrag #9Zitat von himoverthere im Beitrag #8 Ones that could fly up to 1200mph and a set of tyres lasted one or two landings depending on cross wind.
2020 R1250RS, 2018 Ducati 939 Supersport, 2018 Ducati Monster 821, 1967 Ducati 250 mk3.
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