powelmac Member 32 Member For: 9y 3m 5d Posted 03/02/19 07:31 AM Share Posted 03/02/19 07:31 AM Had my car at the tuner through the week. It had lightweight koya 18’s with 285/35r18 semi slicks on the back when it went on the dyno. It made 370rwkw on the mainline dyno, which the tuner thought was way down. So we chucked on some 19” FPV twists on with a cheaper, harder compound 245/35r19 tyre. It then put out 401rwkw with no changes to the tune what so ever! The koya wheel/tyre combo weighs 6kg less than the stock FPV twists, just shows how much a soft tyre can distort dyno results FYI, car ended up at 420rwkw at 19psi while I run in the new twin plate ceramic 1 Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/ Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,600 Member For: 17y 3m 8d Gender: Male Location: Melbourne Posted 03/02/19 07:32 AM Share Posted 03/02/19 07:32 AM yep, dyno results do vary based on tyres size. Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673177 Share on other sites More sharing options...
powelmac Member 32 Member For: 9y 3m 5d Posted 03/02/19 07:33 AM Author Share Posted 03/02/19 07:33 AM I knew it did, but 30rwkw is a more than I though Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673178 Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,600 Member For: 17y 3m 8d Gender: Male Location: Melbourne Posted 03/02/19 07:34 AM Share Posted 03/02/19 07:34 AM yeah, possibly other minor factors added up... Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673179 Share on other sites More sharing options...
Rab WOT? Moderating Team 10,981 Member For: 12y 4m 23d Gender: Male Location: Frankston, 3199 Posted 03/02/19 08:06 AM Share Posted 03/02/19 08:06 AM Weren't the Nitto Innvo's notorious for being hard to get proper dyno reading with? Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673186 Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,440 Member For: 15y 6m 23d Gender: Male Location: Melbourne Posted 04/02/19 08:24 AM Share Posted 04/02/19 08:24 AM Diameter was the issue causing different figures never heard of this before. maybe hes just stroking ya big fella hahahaahh Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673304 Share on other sites More sharing options...
camo86T Silver Donating Members 1,810 Member For: 11y 5m 6d Gender: Male Location: SW Sydney Posted 05/02/19 02:16 AM Share Posted 05/02/19 02:16 AM I thought it was common knowledge a soft semi* gave lower dyno readings, read a number on instances of this on here *@Puffwagon do the honours pls iirc monsta torque or xft used to keep a set of hard cheap arse tyres for optimal results efficiency before they got hub dynos Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673458 Share on other sites More sharing options...
Puffwagon Gold Donating Members 16,348 Member For: 10y 5m 19d Gender: Not Telling Posted 05/02/19 02:19 AM Share Posted 05/02/19 02:19 AM I knew playing footy in high school would pay off cos I'ma handball this one straight to @JETURBO Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673460 Share on other sites More sharing options...
camo86T Silver Donating Members 1,810 Member For: 11y 5m 6d Gender: Male Location: SW Sydney Posted 05/02/19 02:33 AM Share Posted 05/02/19 02:33 AM Awww I meant for a soft semi pun....colour me disappointed Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673467 Share on other sites More sharing options...
Puffwagon Gold Donating Members 16,348 Member For: 10y 5m 19d Gender: Not Telling Posted 05/02/19 02:35 AM Share Posted 05/02/19 02:35 AM Oh I see. Wait until later after I have a glass of port. I'll be semi soft all night long. Link to comment https://www.fordxr6turbo.com/forum/topic/94567-varied-dyno-results-with-rimtyre-change/#findComment-1673468 Share on other sites More sharing options...
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