650b+ tyres on a 650b rim??

[Gez]

I'm just looking at the possibility of fitting Schwalbe Nobby Nic Evo Plus tyres to my Sduro allmtn rc mine are 2,35 and the plus size are 3.00. anyone done it? looking at the aperture they should fit in with the rear being the tighter fit, not cheap though at £44 each as apposed to £25 for the 2.35 650b. Thoughts please..

 

[soundwave]

why do you want tyres that wide ? dont think id want bigger than 2.35 on the rear.

have 2.3 on front of mine

 

[Gez]

having rode with another who has them. I think it might be beneficial especially for the muddy rocky slippy stuff out there at the moment.

 

[EddiePJ]

I'd sooner drop tyre pressures before changing tyres and certainly wouldn't be looking at going up in size, especially given the fact that you risk clogging up the seat and chain stays at the first hint of proper mud, along with soon to follow locked wheels.

 

[SRS]

having rode with another who has them. I think it might be beneficial especially for the muddy rocky slippy stuff out there at the moment.

For me I find that a good part of the grip is through the tyres partially sinking into the mud.
Not tried but I would imagine that very wide tyres would sit on the mud and give very little grip.

Went out yesterday and it was more like water skiing at speed down hill. It was only the tyre sinking into the surface that made it possible to steer and stay on course.

If you do buy them, please let us know how they perform.

 

[EddiePJ]

For me I find that a good part of the grip is through the tyres partially sinking into the mud.
.

I totally agree with that, and would happily reduce my current 2.25 tyre size if riding in mud only.

In fact having cyclo cross tyres on my Haibike Cross worked really well, and from looking at all of the cyclo cross tyre marks last weekend, they actually get around very well when the going gets tough. I'd rather not want to risk that width on sketchy terrain though. Rocks and roots can be tricky at the best of times. For my very mixed terrain, light off road use 2.25 width is just about right.

 

[KTM Bike Industries UK]

Lots of good discussion here, but in answer to your question.

No you can't put 650b+ tyres on 650b wheels.

http://www.mbr.co.uk/how-to-2/tech-advice/complete-guide-to-wheelsizes-26in-650b-650b-29in-29in-327096

 

[Sherman]

Yes you can, but they probably won't fit your frame and fork, atleast not 3.0" tires. Maybe look for bigger 2.4" or 2.5" tires (Continental X-King or Trail King 2.4, WTB Breakout 2.5 etc)? They are pretty tall too so they add more volume to the tires. Rims should be wide enough too to handle the tires.

Wide/big tires are great for rocks and roots. For mud maybe not, you will be sliding over mud with not much grip.

 

[KTM Bike Industries UK]

Yes you can, but they probably won't fit your frame and fork, atleast not 3.0" tires. Maybe look for bigger 2.4" or 2.5" tires (Continental X-King or Trail King 2.4, WTB Breakout 2.5 etc)? They are pretty tall too so they add more volume to the tires. Rims should be wide enough too to handle the tires.

Wide/big tires are great for rocks and roots. For mud maybe not, you will be sliding over mud with not much grip.

No no no, you can't. Its not just about the width of the tread.

650b and 650b+ are not the same size wheels!!

 

[Sherman]

No no no, you can't. Its not just about the width of the tread.

650b and 650b+ are not the same size wheels!!

Take a look at the diagram you posted. 650b+ and 650b rims have the same bsd. Plus tires fit the same rims. Although for plus tires wider rims are usually used (30-50mm inner width).

It's all about tyre clearance horizontally and verticly (plus tires are wider and taller) . Some 27.5 frames might have room for plus tires (but most probably not). Usually 650b+ wheels are retro fitted in 29ers because of clearance or 650b+ specific frames.

 

[KTM Bike Industries UK]

Thats what I mean... just because the inner BSD of the wheel is the same, doesnot mean the size of the wheel (when the tyre is on) will be the same.

Its not just about the width of the tread... the wheel has the same external diameter as a 29er.

So it won't fit.

 

[KTM Bike Industries UK]

Just to add, we've been playing with 650b, 650b+ and 29er frames quite a bit in the office to work out what works with what.

650b+ frame is ideal because you can run all 3 wheel sets in it depending on your mood, needs and the conditions.

 

[Gez]

Yes that's a good article. The 650b+tyres will probably fit my rims but the rolling radius (or dia) is greatly increased from 702mm to 740mm which is too tall for a haibike allmtn rc rear end but it may squeeze within the front forks (taken some measurements) however it would look a bit odd. might try it and report back.

 

[soundwave]

why do you want a 3.0 wide tyre on the front? it will make the bike under steer round tight corners and ride over mud than cut through it.