Author Topic: Pirelli Angel GT vs "A Spec"  (Read 1837 times)

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Offline CRocker

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Pirelli Angel GT vs "A Spec"
« on: April 04, 2018, 12:20:25 am »
So...does any tire guy understand this enough to explain it to me? 

Pirelli says that the Angel GT "A Spec" tire "represents a dual-ply carcass for Touring Models or heavily loaded 2 up riding."  So, let's talk about the stock size rear for a Concours 1400...190/50ZR17.  The "A Spec"...with a load index of 73 (805 lbs)...the non-"A Spec" tire of the same size has the SAME load index...73.  Wouldn't you expect the "A Spec" tire to have a heavier load index? 

Any knowledge is appreciated...

Thanks

Offline sam_uk

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Re: Pirelli Angel GT vs "A Spec"
« Reply #1 on: April 04, 2018, 06:12:52 am »
I agree.Apparently they have a stiffer sidewall but as you say the load index is the same.I mailed Michelin about the new pr5s and that was there reply.I went with the gtA to be on the safe side although they are the same load

Online Egodriver71

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Re: Pirelli Angel GT vs "A Spec"
« Reply #2 on: April 04, 2018, 10:16:30 am »
Load index is based on how much air you can put into a tire to support a given weight.

If the tires are the same size and the max pressures are the same, the load index will be the same.

The extra stiffness from the A-Spec allows it to handle better with additional weight and last longer.
Thomas Mann
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Offline Pilgrim

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Re: Pirelli Angel GT vs "A Spec"
« Reply #3 on: April 04, 2018, 08:13:23 pm »

FYI - The 55 series rear has a higher load rating, 75. 




Online Egodriver71

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Re: Pirelli Angel GT vs "A Spec"
« Reply #4 on: April 05, 2018, 10:26:22 am »

FYI - The 55 series rear has a higher load rating, 75.

Yes, because all other things being equal, it's a larger tire with more volume for air at the same pressure.
Thomas Mann
Jacksonville, FL

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1930 Indian 101 Scout (the first bike)(still in the garage)
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Offline CRocker

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Re: Pirelli Angel GT vs "A Spec"
« Reply #5 on: April 05, 2018, 12:47:00 pm »
Egodriver71,

Thanks for the information... :motonoises:

Pilgrim,

You understand that the tire size mentioned was picked only as a comparison...with both standard and "A Spec" having the same Load Index...not a question of...What tire has a higher Load Index?...if I would have picked the size tire you mentioned for the comparison, I would have stated that both versions have a 75 Load Index...it was simply my not understanding why both tires have the same Load Index with one tire being recommended for heavier loads. 

Thanks

Offline Pilgrim

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Re: Pirelli Angel GT vs "A Spec"
« Reply #6 on: April 05, 2018, 08:27:03 pm »
CRocker,
Yes, I understand.  Just pointing out that the 55 series is spec'd to carry a heavier load.

Egodriver71,
I've heard/read that A spec tires 'last longer' many times.  But, I'm still skeptical.  Has there been any official tests that back that up?  Is there more depth/thickness to the tread rubber that you'd get more miles out of them?  Not trying to start a fight, just want to know (with hard data) that that is a true statement. 

Offline CRocker

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Re: Pirelli Angel GT vs "A Spec"
« Reply #7 on: April 05, 2018, 10:37:02 pm »
Yep!  And that's another tire where the standard version has the same load index as the "A Spec"...

Online Egodriver71

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Re: Pirelli Angel GT vs "A Spec"
« Reply #8 on: April 06, 2018, 10:00:04 am »
Egodriver71,
I've heard/read that A spec tires 'last longer' many times.  But, I'm still skeptical.  Has there been any official tests that back that up?  Is there more depth/thickness to the tread rubber that you'd get more miles out of them?  Not trying to start a fight, just want to know (with hard data) that that is a true statement.

I'm on round 3 with mine

12k-13k miles commuting mostly here in NEFL. :motonoises:  So the center wear out more than the edges.

That's as official as I have... :great:
Thomas Mann
Jacksonville, FL

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1930 Indian 101 Scout (the first bike)(still in the garage)
1986 Yamaha Radian (the first modern bike)(Sold)
1996 Kawasaki Vulcan 500LTD (the wife's first bike)
1996 Kawasaki Eliminator (Wife's)
1999 Kawasaki Concours (The Warbird)
2006 Kawasaki Vuclan 900 (Wife's)
2009 Kawasaki Concours 14 (Totaled)
2009 Kawasaki Concours 14 (Second Chance)

Offline CRocker

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Re: Pirelli Angel GT vs "A Spec"
« Reply #9 on: April 06, 2018, 02:24:43 pm »
That’s awesome mileage!

Offline smokin

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Re: Pirelli Angel GT vs "A Spec"
« Reply #10 on: April 07, 2018, 03:23:36 am »
13,600 km on Angel "A" spec so far.Mainly on long distance touring with full load,

Offline Bikergofast

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Re: Pirelli Angel GT vs "A Spec"
« Reply #11 on: May 11, 2018, 03:04:43 pm »
These A-spec tires aren't coming up on one of my local shops website, but they have the Angel ST, is that a different tire altogether?

Offline Akumu

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Re: Pirelli Angel GT vs "A Spec"
« Reply #12 on: May 11, 2018, 08:23:58 pm »
ST is the older, not as good tire. You want GT for sure.

Online Egodriver71

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Re: Pirelli Angel GT vs "A Spec"
« Reply #13 on: May 14, 2018, 10:27:37 am »
ST is the older, not as good tire. You want GT for sure.

And definitely 'A-Spec'...

At least for the rear
Thomas Mann
Jacksonville, FL

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1930 Indian 101 Scout (the first bike)(still in the garage)
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Offline PeteTN_zgtr

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Re: Pirelli Angel GT vs "A Spec"
« Reply #14 on: May 18, 2018, 11:46:59 am »
ST is the older, not as good tire. You want GT for sure.

And definitely 'A-Spec'...

At least for the rear

I had std Angels that lasted about 7-8k mi. My main complaint was that handling went away alot by 2000 mi, so I figured it's not worth the price premium over say Shinkos to only get 2k mi of good handling. Anybody that has run both std and A-Spec Angels notice the A-spec handling remains really good much longer?  Handling was great on the std's when new but it was disappointing it went away so fast.
« Last Edit: May 20, 2018, 11:59:09 pm by PeteTN_zgtr »

Offline JDSCO

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Re: Pirelli Angel GT vs "A Spec"
« Reply #15 on: May 18, 2018, 03:10:12 pm »
^ The same is true for the Mich PR4's. 5800miles and they are cupped front and rear and at the wear bars.
Always maintain 42psi and never two-up.
Handling fell off noticeably at 4000miles.
I never ride to "bald". I'm disappointed and surprised by Mich PR4 performance.
I didn't install 4GT's because I read that GT's detract from handling because they're designed for max weight.
I wish now that I wouldn't have read that and have purchased 4GT's instead.

Now, 2018 Cycle World says that the C14, and others, are heavy touring machines requiring GT rated rubber whether you're two-up or not.

I'm going to buy Pirelli Angels GT A-spec's next. looking at Mich PR5's but no GT available until 2019.
This will be my first Pirelli set
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Offline JDSCO

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Re: Pirelli Angel GT vs "A Spec"
« Reply #16 on: May 18, 2018, 07:56:12 pm »
Pirelli has a Angel GT rebate. $20 per tire, $50 for a set, via a gift card
It would appear that the A-spec falls under their Angel GT rebate but the rebate doesn't specify "Angel GT A-spec" specifically.
The A-spec is an Angel GT. Correct?
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Offline Akumu

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Re: Pirelli Angel GT vs "A Spec"
« Reply #17 on: May 18, 2018, 08:18:29 pm »
^Correct.

Offline PeteTN_zgtr

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Re: Pirelli Angel GT vs "A Spec"
« Reply #18 on: May 21, 2018, 12:10:26 am »
ST is the older, not as good tire. You want GT for sure.

I thought about trying the Angel ST on the C14. It worked really well for 5000 miles on my last bike before I sold it. It was a 93 CBR1000F. About 50lbs lighter than a C14 and more compliant fork. Handling never deteriorated much. The Angel GT front started looking like a hexagon by 2000 miles. I think the dual compound fronts wear oddly. Same experience with a Michelin Pilot power and Dunlop Roadsmart 1

Offline sc

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Re: Pirelli Angel GT vs "A Spec"
« Reply #19 on: May 21, 2018, 11:06:06 am »
ok, I just mounted a set of Angel GT on her, been running Michelin pr4 gt for the last few sets. Are you guys running 41 psi in these?

Offline Staylo

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Re: Pirelli Angel GT vs "A Spec"
« Reply #20 on: May 21, 2018, 12:02:26 pm »
ok, I just mounted a set of Angel GT on her, been running Michelin pr4 gt for the last few sets. Are you guys running 41 psi in these?
I run 41 hot. About 38-39 cold.
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Online Egodriver71

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Re: Pirelli Angel GT vs "A Spec"
« Reply #21 on: May 22, 2018, 10:11:03 am »
ok, I just mounted a set of Angel GT on her, been running Michelin pr4 gt for the last few sets. Are you guys running 41 psi in these?

42 cold
Thomas Mann
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Offline sc

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Re: Pirelli Angel GT vs "A Spec"
« Reply #22 on: May 24, 2018, 05:27:05 pm »
1 week and 800 miles later of commuting mostly highway.
 
 ive had 2 rides in rain and while these angels aren't as good as the PR4 gts were in the rain they did seem to have decent wet traction. I went with a 55 rear A spec and it does seem to turn into the high speed sweepers better.
Will they last as long as my PR4's did, I'm doubtful, but hope to get most of the season out of them.

Offline JDSCO

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Re: Pirelli Angel GT vs "A Spec"
« Reply #23 on: June 06, 2018, 02:43:45 pm »
It's apparent, the sipe preference between manufacturers.
I've opted for my first Angel GT A-spec set, being a Mich PR3, 4 fan.
The installed Mich PR4's with 6500 miles, unfortunate cupping that could have been exacerbated by the suspension upgrade and heavy throttle/braking.
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Offline LinuxGuyGary

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Re: Pirelli Angel GT vs "A Spec"
« Reply #24 on: June 06, 2018, 03:26:59 pm »
Here's a question for the all knowing COG group,  My last tire change was Angel GTs based on the reviews here,  I really love the 'feel' of these tires, They inspire confidence, and I will continue using them for that reason.  I was hoping for 6-8k miles.  but only saw 4205 miles before the rear was done.   Check the picture,  Utah road are chipped with crushed slag and are very abrasive, but I would have expected more, given that folks report much higher mileage, even fully loaded.

I've just replaced the rear with an 'A' spec 55 series, hoping for better life without giving up that feel.

I'm anal about pressures, and have always run @ 42 cold, and ride almost 100% 1-up with light loading.

I'm going to lower the cold PSI to maybe 38 as the centers are definitely wearing more than everywhere else.

Thoughts Anyone ?   

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