singh87 Member 50 Member For: 11y 8m 28d Gender: Male Posted 14/04/15 10:45 AM Share Posted 14/04/15 10:45 AM Hi guys I owned fg mk2 from stock 18 inch I went to 20 inchs. Stock sizee 245/40/18 all around . I went 20 inchs 245/35/20 on front and 275/30/20 on rears. My ques is wats the speed diff at 100kph?? Thxx Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/ Share on other sites More sharing options...
Bizkets is Drunk? Too heavy needs boost Member 5,929 Member For: 11y 8m 10d Gender: Male Location: Adelaide Posted 14/04/15 11:02 AM Share Posted 14/04/15 11:02 AM Speedo error calculator – speedometer error as a result of tyre size change – Speedometer calibration http://www.tyresizecalculator.com/tyre-wheel-calculators/speedo-error-calculator Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539797 Share on other sites More sharing options...
Bizkets is Drunk? Too heavy needs boost Member 5,929 Member For: 11y 8m 10d Gender: Male Location: Adelaide Posted 14/04/15 11:04 AM Share Posted 14/04/15 11:04 AM 3km/h 1 Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539798 Share on other sites More sharing options...
singh87 Member 50 Member For: 11y 8m 28d Gender: Male Posted 14/04/15 12:24 PM Author Share Posted 14/04/15 12:24 PM On 14/04/2015 at 11:04 AM, Bizkets is fat? said: 3km/hthxx mate Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539824 Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 10m 19d Gender: Male Location: @ my laptop Posted 15/04/15 12:25 AM Share Posted 15/04/15 12:25 AM can be corrected in tune Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539858 Share on other sites More sharing options...
PTR_NITRO_FG Donating Members 3,214 Member For: 11y 10m 21d Gender: Male Location: NOR Perth Posted 15/04/15 04:24 AM Share Posted 15/04/15 04:24 AM Can this be done to stock car or only a car with a SCT tune loaded already?If you had a tune already; and then change tyres at a latter date....how long would it take you to access tune & correct speedo? Is it a 5-10min job? Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539872 Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 10m 19d Gender: Male Location: @ my laptop Posted 15/04/15 06:43 AM Share Posted 15/04/15 06:43 AM ecu needs to be adjusted so it will take some form of software to access it to change it, only takes 15 minutes or so once the car is on the dyno Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539881 Share on other sites More sharing options...
PTR_NITRO_FG Donating Members 3,214 Member For: 11y 10m 21d Gender: Male Location: NOR Perth Posted 15/04/15 06:51 AM Share Posted 15/04/15 06:51 AM Awesome! I'm sure my tuner will charge bugger all for that then....Thanks ratter! Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539882 Share on other sites More sharing options...
singh87 Member 50 Member For: 11y 8m 28d Gender: Male Posted 15/04/15 08:51 AM Author Share Posted 15/04/15 08:51 AM Thxx ratter . U are always great help +1 Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539889 Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 10m 19d Gender: Male Location: @ my laptop Posted 15/04/15 09:23 AM Share Posted 15/04/15 09:23 AM Thanks and you're welcome Link to comment https://www.fordxr6turbo.com/forum/topic/90374-speedo-question/#findComment-1539892 Share on other sites More sharing options...
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