Tyre speed ratings?
Moderators: Bearbonesnorm, Taylor, Chew
- Bearbonesnorm
- Posts: 23964
- Joined: Sun Jun 05, 2011 8:53 pm
- Location: my own little world
Tyre speed ratings?
Obviously car / motorcycle tyres have speed ratings but does anyone know if bicycle tyres are rated or whether they're even tested?
I picked up a 1920's sidevalve engine and fancy building a something based around a boardtrack racer. As you can see from the example, they were often little more than pushbikes with an engine. Most ran wheels / tyres of a larger diameter than is readily available today but bicycle tyres of the correct size could be obtained. It wouldn't be the fastest or heaviest thing in the world but would you trust a pushbike tyre at 70mph?
I picked up a 1920's sidevalve engine and fancy building a something based around a boardtrack racer. As you can see from the example, they were often little more than pushbikes with an engine. Most ran wheels / tyres of a larger diameter than is readily available today but bicycle tyres of the correct size could be obtained. It wouldn't be the fastest or heaviest thing in the world but would you trust a pushbike tyre at 70mph?
May the bridges you burn light your way
-
- Posts: 8144
- Joined: Mon Mar 18, 2013 9:56 am
Re: Tyre speed ratings?
I might trust it at pushbike weight. Not sure I'd risk it with an engine installed. Ebike tyres are now a thing and are tougher than normal. Might be worth looking at?
- Bearbonesnorm
- Posts: 23964
- Joined: Sun Jun 05, 2011 8:53 pm
- Location: my own little world
Re: Tyre speed ratings?
Ooh good call Colin. I'd not considered those.
May the bridges you burn light your way
- RIP
- Posts: 9090
- Joined: Wed Nov 12, 2014 7:24 pm
- Location: Surfing The Shores Of Sanity Since 1959
- Contact:
Re: Tyre speed ratings?
It's not the tyres I'd be concerned about .
https://www.youtube.com/watch?v=rTfu0hjVtzE&t=15s
Spoiler: luckily he only ends up with some broken ribs etc
"My God, Ponsonby, I'm two-thirds of the way to the grave and what have I done?" - RIP
The sign outside the asylum is the wrong way round.....
"At least you got some stories" - James Acaster
The sign outside the asylum is the wrong way round.....
"At least you got some stories" - James Acaster
-
- Posts: 2130
- Joined: Wed Mar 21, 2012 9:39 am
- Location: Southern Cataluña
- Contact:
Re: Tyre speed ratings?
They were descending the Ventoux at around 100km/h yesterday and nobody died as far as I know. A fully laden tourer probably doesn't weigh much less than that Harley so some Schwalbe Marathon touring tyres should work.
Re: Tyre speed ratings?
no because whilst you could get way with it for short priods of time - 15 minute descent- you are not going to get great life from a tyre run at higher speeds all the time. Therefore IMHO there is high chance of a fail and the fail will likly be catastrophic for the tyre and the person sat on the bike
Will ebike tyres not just be for heavier bikes/loads rather than faster tyres? - Bit like van tyres are designed for weight not x 4 the normal speed
Will ebike tyres not just be for heavier bikes/loads rather than faster tyres? - Bit like van tyres are designed for weight not x 4 the normal speed
- Cheeky Monkey
- Posts: 3915
- Joined: Mon Aug 01, 2011 1:48 pm
- Location: Leeds ish
- Contact:
Re: Tyre speed ratings?
I doubt it's the right thing really but is it the Kirin where they have a (v.expensive) little motorised bike that leads the riders out?
Re: Tyre speed ratings?
oh good shout that I lik that suggestion - not sure what their top speed is thuogh - its called a derney bike FWIW
-
- Posts: 86
- Joined: Thu Oct 04, 2018 1:36 pm
Re: Tyre speed ratings?
Depends whether you want it to be road legal, or just something to take to shows on a trailer.
Road (motorbike) tyres need the correct approval stamps on them, so no you can't just stick mountain bike tyres on them.
In terms of usefulness, Avon do the speedmaster classic tyres in 21" and I'd hazzard a guess that's what is on that bike (bear in mind motorbike tyres are the rim size, so a 21" rim is about the same size as a 26" MTB rim, and a typical 90/90 classic tyre makes it roughly the same size as a fat bike.
Road (motorbike) tyres need the correct approval stamps on them, so no you can't just stick mountain bike tyres on them.
In terms of usefulness, Avon do the speedmaster classic tyres in 21" and I'd hazzard a guess that's what is on that bike (bear in mind motorbike tyres are the rim size, so a 21" rim is about the same size as a 26" MTB rim, and a typical 90/90 classic tyre makes it roughly the same size as a fat bike.
Re: Tyre speed ratings?
I asked about the tyres.
I guess it's just a narrow moto tyre.
Looks fun
Midnight break in to the velo drome, do some laps with such a beast sounds similar to riding a bike with mud tyres across a green.
Yeah... lots of fun
- Cheeky Monkey
- Posts: 3915
- Joined: Mon Aug 01, 2011 1:48 pm
- Location: Leeds ish
- Contact:
Re: Tyre speed ratings?
That looks perfect to knock your teeth out and clean any clinging chug-nuts.
I salute the madness
Re: Tyre speed ratings?
From Schwalbe:
Then again, you've got 110mph on a set of Contis. Setup's a fair bit lighter than a moto mind: https://www.cyclingweekly.com/news/late ... ike-118329
Assume there's a fair safety margin built in there.For speed e-bikes you need a special approval for the tyre equipment. Tires with ECE-R75 authorization valid throughout the European Union are the simplest solution in this case. All of our Energizer tires have the mark of conformity and are
approved for vehicles up to 50 km/h.
Then again, you've got 110mph on a set of Contis. Setup's a fair bit lighter than a moto mind: https://www.cyclingweekly.com/news/late ... ike-118329
- Bearbonesnorm
- Posts: 23964
- Joined: Sun Jun 05, 2011 8:53 pm
- Location: my own little world
Re: Tyre speed ratings?
Sppedmaster's too wide and they're most certainly bigger than 21" rims.Avon do the speedmaster classic tyres in 21" and I'd hazzard a guess that's what is on that bike
I'm thinking I might have found some 2" x 23" Conti's designed for 'motorised bicycles'
May the bridges you burn light your way
- BigdummySteve
- Posts: 2974
- Joined: Sun Nov 20, 2016 9:16 pm
- Location: Somewhere over the rainbow
Re: Tyre speed ratings?
We’re all individuals, except me.
I woke up this morning but I’m still in the dark
I woke up this morning but I’m still in the dark
- BigdummySteve
- Posts: 2974
- Joined: Sun Nov 20, 2016 9:16 pm
- Location: Somewhere over the rainbow
Re: Tyre speed ratings?
I love old board trackers, on a sensible note
These might help you stay alive a little longer
https://www.wwag.com/cgi-bin/WebObjects ... =%21136911
These might help you stay alive a little longer
https://www.wwag.com/cgi-bin/WebObjects ... =%21136911
We’re all individuals, except me.
I woke up this morning but I’m still in the dark
I woke up this morning but I’m still in the dark
- Bearbonesnorm
- Posts: 23964
- Joined: Sun Jun 05, 2011 8:53 pm
- Location: my own little world
Re: Tyre speed ratings?
Bloody hell Steve, they're not cheap. They're also 21", the Conti's I saw were 23" and £30 each
May the bridges you burn light your way
- BigdummySteve
- Posts: 2974
- Joined: Sun Nov 20, 2016 9:16 pm
- Location: Somewhere over the rainbow
Re: Tyre speed ratings?
Ooo didn’t notice the price ouch! Still they are retro do obviously worth the priceBearbonesnorm wrote: ↑Thu Jul 08, 2021 1:54 pm Bloody hell Steve, they're not cheap. They're also 21", the Conti's I saw were 23" and £30 each
We’re all individuals, except me.
I woke up this morning but I’m still in the dark
I woke up this morning but I’m still in the dark
- fatbikephil
- Posts: 6574
- Joined: Wed Apr 02, 2014 10:51 pm
- Location: Fife
- Contact:
Re: Tyre speed ratings?
The VMCC will sort you out for tyres for that but spendy - i.e they make fat bike tyres look cheap!
If you let me know the sizes I'll ask a vintage bike 'expert' (a good mate who knows his stuff) to see what he can come up with.
P
If you let me know the sizes I'll ask a vintage bike 'expert' (a good mate who knows his stuff) to see what he can come up with.
P