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Old 27-10-2014, 05:06 PM   #1
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Non VW post Greasy Bikers - Tyre question if I may?

Hi, Looking to source a chunky pair of enduro tyres for my CBX Brat bike project and have seen Pirelli Scorpions which have an excellent looking tread pattern with road holding capabilities to boot.

However, as I need 18" front (3.60 wheel) and rear (4.10) I'm looking to fit so called rear tyres, slightly oversized, on the front 110/90 & 120/80 rear. Can this be done from a road legal MOT standpoint and from a technical handling view as well?

These are the tyres:

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Old 27-10-2014, 05:39 PM   #2
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Fitting rears on front was commonplace years ago.
The tyre will state front use only or rear use only if it is indeed either. Some tyres are still made for both and are fitted opposite way round front to back.
In this case they will have arrows indicating the correct rotation for front and back.
If it doesn't have this, it won't be MOT legal.
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Old 28-10-2014, 12:38 AM   #3
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I've just googled CBX Brat... thank you for enlightening me! I want one!!
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Old 28-10-2014, 12:50 AM   #4
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Quote:
Originally Posted by Top Banana Racing View Post
Fitting rears on front was commonplace years ago.
The tyre will state front use only or rear use only if it is indeed either. Some tyres are still made for both and are fitted opposite way round front to back.
In this case they will have arrows indicating the correct rotation for front and back.
If it doesn't have this, it won't be MOT legal.
Thanx TBR, I'm still measuring clearance on the front forks before I get carried away with massive front tyre sizes. Limited to a few sizes around 90/90 or 100/90 and a 110/80 which might be too wide with the current mudguard set up.

I'll pop into my local tyre/bike MOT centre and ask them I think.
I get the rotation thing, but if the tyres aren't marked F or R they will fit both ends, cheers
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Old 28-10-2014, 12:55 AM   #5
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Quote:
Originally Posted by chris7ian View Post
I've just googled CBX Brat... thank you for enlightening me! I want one!!
They can be very cool





My base bike is an '82 CBX550F - the one with red/white/black tank and stock bodywork (now stripped the rear end) just a few rows down the Google image search.
Recently registered on thebikeshedcc.com
If mine turns out to be half as good as some out there, I'll be pleased.
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Old 28-10-2014, 12:37 PM   #6
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one thing to note with dual sport tyres is there crap on the road add into that the oversize your talking about fitting and it'll have interesting handerling traits.
bike react very differently to cars when it comes to tyres. even one size over can change it form a sweet riding fun bike into something that wants to jump into the nearest hedge.
it's a question of do you want something that looks cool outside the wine bar or something that you can ride and have some confidence in?
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Old 28-10-2014, 12:53 PM   #7
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To add to what Rob says above although you can physically fit a rear tyre on the front of your bike it will make the handling interesting when you get to the upper limits as a rear tyre is designed to put the power down whereas a front is designed to react totally differently under braking which is why a lot of the universal (for want of a better word) tyres that can be fitted to front or rear tend to be for cacky underpowered bikes that tend to get fannied everywhere and never get near the limits of handling and never really put any excess stress on the tyre
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Old 28-10-2014, 01:28 PM   #8
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dubmeister knows what he is on about he builds tyres for a living and has fallen off most things with 2 wheels (and a couple of 3 wheels )
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Old 28-10-2014, 02:12 PM   #9
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If you've ever been out with BrownBug you'll know that stressing the tyres isn't an issue.
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Old 29-10-2014, 12:07 AM   #10
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Quote:
Originally Posted by chris7ian View Post
I've just googled CBX Brat... thank you for enlightening me! I want one!!

yeah.. me too


I would fit Dunlop k82 and have some faith whilst out on the road

what do you intend to use the bike for??
do you really need dual purpose tyres?

loving the build so far

http://www.nationalbiketyres.co.uk/m...82/cat_85.html
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