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| Non-Performance This is the place for all interior, exterior, and general non-performance modifcations. |
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#1
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Would changing tire size from p195/75r/14 (factory) to p195/65r/15 change tire height? Thus putting my speedo out by 12mph
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#2
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Re: tire size
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R32 GTR w/351w .020 forged, 8.9:1, PTK T76, Turbosmart 40 BC & 45 WG, Tial 40 BV, AFR 205s 310/245, 228/228 550/550 114 Hydro, 1.7rr, Isky RLs, 4" HKS exhaust, ARC 30x16x4 IC, 8 point cage, C2 gauges, 2 step, C4 3200 stall w/ R Manual & Hurst Ratchet shifter, 17" Panasport G7s, CSU 750 & bonnet, Vic Jr intake, 3.63 gears, Corbeau Carrera seats, Custom wide body, Bomex side skirts and rear 1/4 caps, Tommy Kaira bumper. |
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#3
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Re: tire size
Nice. the 14 is a 25.5 inch tall tire, the 15 is actually a 25.0 inch tall tire. So you're speedo would read slightly faster than your true speed.
What has tires this small? my donut spare is almost that big!
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1994 SVT Cobra. 306, Ported GT-40X's, Crane 2031, NX Wet Kit (100 shot for now),TKO 500, TwEECer R/T, and all the bolt-ons..... http://www.cardomain.com/id/mccobra94 1995 F-150 SC/4X4 351W/E4OD, K&N, Custom Exhaust w/Flowmaster. Freedom Isn't Free. |
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#4
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tire size reply
Yes the 195 is the width from bead to bead in mill. the 75/65 is the percentage of sidewall and that does not change with rim size so the tire is larger. 12 mph larger though? i would'nt think so but mabey.
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#5
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Re: tire size reply
Contact the manufacturer of your rim/tire and they should be able to tell you. With the purchase of a programmer, depending on your year, you can calibrate your computer according to the size of the tire/rim, etc. Also, if you go to a ford dealership, they can calculate it and give you a different speed gear for the transmission that will correct the problem. The speed gear is not all that expensive.
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