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#Post#: 5848--------------------------------------------------
tyres masterclass
By: Tinworm Date: March 9, 2022, 8:50 am
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Please could someone do a masterclass on tyres, and even better
if they could do it in a YouTube video.
I have always found the specifications of tyres very confusing.
On Jim Tanner';s advice I bought pit bike wheels which are M2R
KMX-R 160 Pit Bike Front 17" Rim. I saw some he brought to
Gaydon and really liked them. They look solid with thick spokes.
But once you have wheels of whatever rim size, as long as you
get the right diameter, do they expand to fit the rim? I mean,
does the 160 become irrelevant, with air pushing the tyre rim
out?
How do the proportions and %s of tyre dimensions work, etc?
#Post#: 5851--------------------------------------------------
Re: tyres masterclass
By: StefanN Date: March 9, 2022, 9:10 am
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A range of tyre widths will fit the rim - depends a bit on the
rim but mainly the tyre. You’ll find lists online showing
typical ranges. For reference I have used 2.5” upto 3.25” on a
pit bike wheel similar to yours without problem.
#Post#: 5852--------------------------------------------------
Re: tyres masterclass
By: StefanN Date: March 9, 2022, 9:15 am
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When it comes to fitting them there’s lots and of tutorials on
YouTube. And there’s no way I can say this without encouraging
sniggering from the back of class, but I found tyre lube helped
alot.
#Post#: 5853--------------------------------------------------
Re: tyres masterclass
By: Tinworm Date: March 9, 2022, 9:35 am
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[quote author=StefanN link=topic=783.msg5852#msg5852
date=1646838934]
there’s no way I can say this without encouraging sniggering
from the back of class, but I found tyre lube helped alot.
[/quote]
hehe got you
#Post#: 5854--------------------------------------------------
Re: tyres masterclass
By: Tinworm Date: March 9, 2022, 9:39 am
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[quote author=StefanN link=topic=783.msg5851#msg5851
date=1646838604]
A range of tyre widths will fit the rim - depends a bit on the
rim but mainly the tyre. You’ll find lists online showing
typical ranges. For reference I have used 2.5” upto 3.25” on a
pit bike wheel similar to yours without problem.
[/quote]
cheers
as regards the 3.25", I asked Jim this and I think he said that
it is not just the size of the wall - something about
proportions
incidentally, I confess to not even understanding what the 140
or 160 mean. I assumed mm, but of course that is ridiculous
#Post#: 5855--------------------------------------------------
Re: tyres masterclass
By: chrisenamels Date: March 9, 2022, 10:32 am
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They're 1.40, and 1.60, I believe the measurements that date
back to imperial days, so inches. You may find this interesting:
HTML https://blogotive.com/wp-content/uploads/2017/07/Motorcycle-Wheel-Rim-Width-for-Tires-Size.pdf.
#Post#: 5857--------------------------------------------------
Re: tyres masterclass
By: jim Date: March 9, 2022, 11:24 am
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The pit bike wheels going on my new contraption kart thingy are
1.6 inches between the flanges on the rim. I chose that width so
I can fit 3.25 17 Avon ditch finders. Listed as safety milage
for some reason. They have a flat top and
are quite vintage looking. Pricey for new but can picked up at
auto jumbles.
#Post#: 5858--------------------------------------------------
Re: tyres masterclass
By: Tinworm Date: March 9, 2022, 11:39 am
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[quote author=Chris Brown link=topic=783.msg5855#msg5855
date=1646843543]
They're 1.40, and 1.60, I believe the measurements that date
back to imperial days, so inches. You may find this interesting:
HTML https://blogotive.com/wp-content/uploads/2017/07/Motorcycle-Wheel-Rim-Width-for-Tires-Size.pdf.
[/quote]
aaahhhhhh olden days measurement! Of course! doh!
#Post#: 5859--------------------------------------------------
Re: tyres masterclass
By: Tinworm Date: March 9, 2022, 11:57 am
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[quote author=jim link=topic=783.msg5857#msg5857
date=1646846647]
The pit bike wheels going on my new contraption kart thingy are
1.6 inches between the flanges on the rim. I chose that width so
I can fit 3.25 17 Avon ditch finders. Listed as safety milage
for some reason. They have a flat top and
are quite vintage looking. Pricey for new but can picked up at
auto jumbles.
[/quote]
ditch finders? Not heard that before. What do Avon call them?
Flat topped and vintage sounds good
#Post#: 5860--------------------------------------------------
Re: tyres masterclass
By: David F-R Date: March 9, 2022, 12:25 pm
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To check sizes, try
HTML http://www.bits4motorbikes.co.uk/tiresizeconversion.html
I think my first tyres will be cheap and cheerful from Demon
Tweeks.
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