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SVT Shelby GT500
Picked Up A REAL KR Hood!!
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<blockquote data-quote="Robert M" data-source="post: 7900410" data-attributes="member: 9628"><p>I have thought about the 18" vs. 20" further, and I believe you are right. 18's are much better for on-track performance. For one, there is a broad selection of tire options which probably is not the case with 20's, BUT the second very important variable is the actual tire that is selected for the 18" rim. "If" a shorter sidewall is the optimal handling as we have agreed it is, then a 255/45/18 (as provided from the assy. line on the KR front) is not going to be the best choice for handling. A 40 series, maybe something like the 2000 Cobra R's 265/40/18 is going to be the shorter sidewall answer.<<This tire is almost 1" shorter than the KR tire and gets much closer to the sidewall height of the 20" Super Snake, thus optimizing the 18" wheel tire combo for handling. If the KR had an 18" wheel with a shorter sidewall tire that closer matched the SS, then yes, the 18's would outperform the SS 20's, but this is not the way the KR is sold to the public. </p><p></p><p>The 255/45/18 is the same size and profile as is standard on the regular production GT500, taller sidewall. The one thing that the KR has is the "R" compound which will help in the grip, BUT, then there is that taller sidewall.....:shrug:</p><p></p><p>If the KR's "R" compound were anything like the 2000 Cobra R 100 tread wear BFG KD's that were original equip. in 2000, they are very sticky. If they are anything higher than 100 treadwear (150, 180, 220, etc.) they only get less sticky. The replacement BFG KD's for the 2KR are 200's, the 100's were original "1 time only tires" unless you were fortunate enough to find a spare set of NOS 100's as I did. </p><p></p><p>Looking at Tire Rack, the Goodyear F1 Super Cars listed specifically for the GT500KR say 180 treadwear.<<This is better than many performance tires in the "grip" area, but definitly not 100. For comparision purposes the 1995 Cobra R came with 180 treadwear rating. If these Tire Rack replacement F1's are the same tread wear rating as the original assy. line KR tires, they are about the "R" stickyness of the 1995 Cobra R BFG Comp. T/A's. Since the replacement listing does list these F1's specifically as "GT500KR", I would guess that the originals and the replacements are the same, 180. By comparision the Super Snake P Zero's are 220 = not as soft, but then we have a better sidewall height?</p><p></p><p>I do agree that the KR has a tuned suspension specifically for the KR application. I have also read in a few different places that the KR testing was performed at the Shelby test facility in Las Vegas. The articles also mentioned that Ford Racing, SVT and Shelby personel were on hand for the testing. I can hardly believe that the Shelby guys were not taking notes and gathering data too, especially since the Super Snake was to begin production in the next few months. </p><p></p><p>BTW - I wonder who makes/provides the KR specific parts? By this I mean, who is the vendor/provider of something like a sway bar for the KR, once the testing was done and the specs. were compiled? Possibly Eibach? WOW, the Super Snake has Eibach too. Could Shelby have suspension parts built for their Super Snake kits by the same vendor who is providing KR parts for the KR build? Sure!! The difference, a Ford part number, and that is not going to add to, or take away from, the handling of the specific car. This is done all the time, especially if there is collaboration on a project, as there was with Shelby and Ford on the KR project. The Super Snake goes through a complete suspension make-over (springs, struts, shocks, sway bars, brakes, etc.) with the Eibach coil overs being an option. Could this be because of data gather during the KR tests? Again, Sure!!</p><p></p><p>R</p></blockquote><p></p>
[QUOTE="Robert M, post: 7900410, member: 9628"] I have thought about the 18" vs. 20" further, and I believe you are right. 18's are much better for on-track performance. For one, there is a broad selection of tire options which probably is not the case with 20's, BUT the second very important variable is the actual tire that is selected for the 18" rim. "If" a shorter sidewall is the optimal handling as we have agreed it is, then a 255/45/18 (as provided from the assy. line on the KR front) is not going to be the best choice for handling. A 40 series, maybe something like the 2000 Cobra R's 265/40/18 is going to be the shorter sidewall answer.<<This tire is almost 1" shorter than the KR tire and gets much closer to the sidewall height of the 20" Super Snake, thus optimizing the 18" wheel tire combo for handling. If the KR had an 18" wheel with a shorter sidewall tire that closer matched the SS, then yes, the 18's would outperform the SS 20's, but this is not the way the KR is sold to the public. The 255/45/18 is the same size and profile as is standard on the regular production GT500, taller sidewall. The one thing that the KR has is the "R" compound which will help in the grip, BUT, then there is that taller sidewall.....:shrug: If the KR's "R" compound were anything like the 2000 Cobra R 100 tread wear BFG KD's that were original equip. in 2000, they are very sticky. If they are anything higher than 100 treadwear (150, 180, 220, etc.) they only get less sticky. The replacement BFG KD's for the 2KR are 200's, the 100's were original "1 time only tires" unless you were fortunate enough to find a spare set of NOS 100's as I did. Looking at Tire Rack, the Goodyear F1 Super Cars listed specifically for the GT500KR say 180 treadwear.<<This is better than many performance tires in the "grip" area, but definitly not 100. For comparision purposes the 1995 Cobra R came with 180 treadwear rating. If these Tire Rack replacement F1's are the same tread wear rating as the original assy. line KR tires, they are about the "R" stickyness of the 1995 Cobra R BFG Comp. T/A's. Since the replacement listing does list these F1's specifically as "GT500KR", I would guess that the originals and the replacements are the same, 180. By comparision the Super Snake P Zero's are 220 = not as soft, but then we have a better sidewall height? I do agree that the KR has a tuned suspension specifically for the KR application. I have also read in a few different places that the KR testing was performed at the Shelby test facility in Las Vegas. The articles also mentioned that Ford Racing, SVT and Shelby personel were on hand for the testing. I can hardly believe that the Shelby guys were not taking notes and gathering data too, especially since the Super Snake was to begin production in the next few months. BTW - I wonder who makes/provides the KR specific parts? By this I mean, who is the vendor/provider of something like a sway bar for the KR, once the testing was done and the specs. were compiled? Possibly Eibach? WOW, the Super Snake has Eibach too. Could Shelby have suspension parts built for their Super Snake kits by the same vendor who is providing KR parts for the KR build? Sure!! The difference, a Ford part number, and that is not going to add to, or take away from, the handling of the specific car. This is done all the time, especially if there is collaboration on a project, as there was with Shelby and Ford on the KR project. The Super Snake goes through a complete suspension make-over (springs, struts, shocks, sway bars, brakes, etc.) with the Eibach coil overs being an option. Could this be because of data gather during the KR tests? Again, Sure!! R [/QUOTE]
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