B-Mac Posted November 25, 2016 Report Share Posted November 25, 2016 (edited) Getting ready to replace tires on My Z1k. I know many riders here using the pirelli angel's. My size. F. 120/70-17 R. 190/55-17 What is the difference between the GT Rear: 75W / 75W A spec and the D spec. Also the GT front: A spec / 59W / 58W ref: revzilla Thanks, B. Edited November 25, 2016 by B-Mac Quote Link to comment Share on other sites More sharing options...
JustinNck1 Posted November 25, 2016 Report Share Posted November 25, 2016 The A-spec is supposed to be for heavier bikes. I've ran both on my FJR and can't tell a difference. Quote Link to comment Share on other sites More sharing options...
Bubba Posted November 26, 2016 Report Share Posted November 26, 2016 (edited) The A-spec has a 2-layer construction--presumably the sidewall--for increased stability on the large sport tourers. I'm almost certain that Pirelli makes an A-spec front as well now. However, if this translates into increased mileage, I'd bet the front would last longer and you'd be swapping rears twice as often as fronts. Prolly save some money, but I've never been a fan of pairing a new tire with one that's at half-life. Honestly, I'm not sure I'd classify your Zed1K as a "heavy" sport tourer. My guess is that the weight target for the A-spec is 600# and up. Edited November 26, 2016 by Bubba Quote Link to comment Share on other sites More sharing options...
Casper Posted November 26, 2016 Report Share Posted November 26, 2016 7 minutes ago, Bubba said: The A-spec has a 2-layer construction--presumably the sidewall--for increased stability on the large sport tourers. I'm almost certain that Pirelli makes an A-spec front as well now. However, if this translates into increased mileage, I'd bet the front would last longer and you'd be swapping rears twice as often as fronts. Prolly save some money, but I've never been a fan of pairing a new tire with one that's at half-life. Honestly, I'm not sure I'd classify your Zed1K as a "heavy" sport tourer. My guess is that the weight target for the A-spec is 600# and up. Yeah, I don't think I'd do A-spec on a Z1000. Quote Link to comment Share on other sites More sharing options...
ScubaCinci Posted November 26, 2016 Report Share Posted November 26, 2016 Yeah, you'd be better off with PR4's or equivalent...I think I had PR3's on mine when Bill bought it from me. Quote Link to comment Share on other sites More sharing options...
B-Mac Posted November 26, 2016 Author Report Share Posted November 26, 2016 1 hour ago, Bubba said: The A-spec has a 2-layer construction--presumably the sidewall--for increased stability on the large sport tourers. I'm almost certain that Pirelli makes an A-spec front as well now. However, if this translates into increased mileage, I'd bet the front would last longer and you'd be swapping rears twice as often as fronts. Prolly save some money, but I've never been a fan of pairing a new tire with one that's at half-life. Honestly, I'm not sure I'd classify your Zed1K as a "heavy" sport tourer. My guess is that the weight target for the A-spec is 600# and up. Thank You for the A spec info. Decision and purchase made. Quote Link to comment Share on other sites More sharing options...
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