Experience with Nimbus Armadillos

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njford
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Experience with Nimbus Armadillos

Postby njford » 30 Nov 2008, 4:26pm

I wonder whether others have had similar experiences with Nimbus Armadillo tyres. I fitted some in January 2007 on my winter commuter bike, and had nearly two years of puncture-free riding. However the sidewalls have now developed three deep cracks at regular positions around the tyre. It seems as though this must relate to the manufacturing process since the cracks are equally spaced around the tyre and I can see marks in these same positions on a brand new tyre. I suppose I have travelled around 4000 miles on these tyres, and the tread is still in fine condition, but I have replaced the tyres because of the sidewall cracks.

Certainly I can testify to the effectiveness of the Armadillos in protecting against punctures because I replaced the front tyre first with a Continental Contact and then with a Michelin Transworld City (both from my stock of spares). Neither survived my Cheshire country lanes commute for as much as a week without developing punctures through large gashes that had already developed in the tyres. Replacing with a new Nimbus Armadillo has stopped my run of punctures. However I am wondering whether to try Marathon Plus as an alternative. Does anyone have any comments?

james01
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Joined: 6 Aug 2007, 4:48am

Postby james01 » 1 Dec 2008, 10:06am

I've been using Marathon Plus 26 x 1.75 for around 3 years. Apart from a freak sidewall puncture they've never failed. They're quite easy-rolling, but they are heavy. Tread is showing some wear, the sidewalls are fine (despite regular use of a sidewall dynamo). They're regularly used on thorny lanes, glass-strewn paths, and rough tracks, it's great not needing to worry about punctures. Spa cycles are advertising them in Cycle mag at £35 a pair, I'll probably get another pair to keep in stock.

woollee23
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Postby woollee23 » 1 Dec 2008, 12:42pm

Not yet. I've been running a Spesh Nimbus Armadillo for about 14 months on the front, covering approx 2500 miles since then. A little way off your distance and length of time on the bike, so thanks for the tip off - I'll keep my eyes peeled.

PW
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Location: N. Derbys.

Postby PW » 2 Dec 2008, 12:05pm

I ran a pair of 26X 1.5" Armadillos on a commuting hack, they died after 1500 miles (mainly canal towpath) when the treads started to come away from the carcase. I replaced them with Marathon Plusses in 26 X 1.75" which were still running over 2,000 miles later when my daughter in law took the bike to Germany back in August. As far as I know those tyres are still in use.
If at first you don't succeed - cheat!!

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lauriematt
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Re: Experience with Nimbus Armadillos

Postby lauriematt » 2 Dec 2008, 4:01pm

njford wrote:I wonder whether others have had similar experiences with Nimbus Armadillo tyres. I fitted some in January 2007 on my winter commuter bike, and had nearly two years of puncture-free riding. However the sidewalls have now developed three deep cracks at regular positions around the tyre. It seems as though this must relate to the manufacturing process since the cracks are equally spaced around the tyre and I can see marks in these same positions on a brand new tyre. I suppose I have travelled around 4000 miles on these tyres, and the tread is still in fine condition, but I have replaced the tyres because of the sidewall cracks.

Certainly I can testify to the effectiveness of the Armadillos in protecting against punctures because I replaced the front tyre first with a Continental Contact and then with a Michelin Transworld City (both from my stock of spares). Neither survived my Cheshire country lanes commute for as much as a week without developing punctures through large gashes that had already developed in the tyres. Replacing with a new Nimbus Armadillo has stopped my run of punctures. However I am wondering whether to try Marathon Plus as an alternative. Does anyone have any comments?



i too used the Nimbus Armadillo that came as standard with the Specialized Sirrus. theyre great tyres...but a little pricey to replace so ive changed to a cheaper brand

i used them well over a year and even then it was only the rear tyre that was badly worn out. i kept the front as a spare.

i too had the same cracking of the sidewall - but i put this down to the tyres being underinflated every so often
WHAT DOESNT KILL YOU .... CAN ONLY MAKE YOU STRONGER

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Paul Smith SRCC
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Re: Experience with Nimbus Armadillos

Postby Paul Smith SRCC » 13 Dec 2008, 3:17pm

njford wrote:....but I have replaced the tyres because of the sidewall cracks....

One reason that tyre side walls can start to crack if they are ridden underinflated.

Paul_Smith

insanityideas
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Postby insanityideas » 24 Dec 2008, 12:07am

My Specialised Nimbus EX, which include the Armadillo anti puncture system (or is it flak jacket anti-puncture system?? I get confused) also developed side wall cracks, and some cracks in the tread, as well as some gashes in the tread due to glass.

I agree with Sheldon Brown as far as how important such stuff is. To summarise this is normal as tyres age, and does not affect the performance of the tyre or its safety. It is the nylon (or kevlar or whatever) carcas that keeps the tyre together and as long as the rubber is still firmly bonded to that everything is ok.

Mine had cracks because they were old, but worked just fine, and are still not worn out. I made a change of tyre because I wanted something narrower and with a softer rubber compound. The Nimbus are now a spare set for when its not the winter any more.

So I say don't worry about it, it is a normal part of the tyre aging process. Thats not to say that the hard wearing rubber compound used in specialised tyres isn't more prone to it than other brands.