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#1
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Tire Fitment
I know that 225/45R17 tires are a good option in place of the 225/50R16's Speedometer reads almost identical.
I was asked whether a 235/45R17 or 245/45R17 tires would work. Something about wanting to fill up the wheel openings a little more. Has anyone done it or has suggestions or advice? Here are the calculations Using OEM 225/50R16 tires, and your speedo reads 65 mph... 225/45R17 tires will read 65.3 mph 235/45R17 tires will read 66.23 mph 245/45R17 tires will read 67.15 mph
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. Subaru Ambassador 1996 Polo Green LSi #216..138,100 miles...SOLD JFICX8659TH100216.....Date of Manufacture: November 16, 1995..... Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan In-Service Date: January 2, 1997 "The Pristine Green Polo Machine” First Polo Green on the Network First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000) First 5000K HID factory fog lights (2007) First SVX JDM BBS wheels on a USDM SVX (2013) HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler. R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016 ![]() 2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback ![]() 2007 Mazda Miata MX-5 PRHT...102,000 miles. Plenty of parts, service and windshields. ![]() 4th Registered Network member —2/21/2001 My NEW locker..I...My Email..I..Wikipedia/SVX . . |
#2
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Re: Tire Fitment
John,
I have had 245/45/17s on the Claret for quite a while now. But its a 4.44 so with the gear advantage I'm not worried about hurting the transmission. On my white XT6, the day I installed taller tires the lock up TQ blew out.
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www.svxfiles.com The first SuperCharged SVX, ![]() the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway ![]() Fiberglass Hood thread My locker 4.44 Swap link Last edited by svxfiles; 12-07-2013 at 11:01 AM. Reason: Misspelled up?! |
#3
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Re: Tire Fitment
One thing I would do is take the car for a spin with a GPS speedo (smartphone app) onboard and see just how far out the car's speedo is. My SVX reads faster than true speed, so a taller tire would actually make my gauge more accurate.
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl Last edited by Crazy_pilot; 12-06-2013 at 07:09 AM. |
#4
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Re: Tire Fitment
A larger diameter tire makes the speedometer read slower, not faster, at the same true speed.
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#5
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Re: Tire Fitment
Sorry, I misspoke. My speedo reads faster that I'm actually going. 100 KPH on the gauge is around 93 on GPS.
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Chris 92 Ebony Mica LS-L "A Rolling Restoration": 223,250 KM - Sleeping 2007 STi 6MT, Stance GR+ coilovers, PWR Rad, JDM hood badge, svxfiles 6000K HIDs, JDM Clear Corners, $15/15 min mod, $20/20 min mod, Energy Swaybar Bushings, Hella Supertones horns, Gold STi BBS rims, Group A lightweight crank pulley, A/C system removed, Custom header-back exhaust, Hybrid carbon/metal rear sway bar, restored headlights with CCFL halos 2008 Subaru Legacy Spec B - Diamond Grey Metallic - Sold 2020 Ram 1500 Longhorn - Red Pearl |
#6
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Re: Tire Fitment
Don't forget to also compare them against the '97 tire size of 215/55R16. Then the 235/45R17 is almost identical. I run 235/45R17 and the speedometer is pretty dead on with the GPS.
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'92 SVX LS Pearl White - 6mt |
#7
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Re: Tire Fitment
Quote:
. Last edited by svxcess; 12-07-2013 at 12:05 PM. |
#8
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Re: Tire Fitment
Maybe I missed it but, how accurate is the SVX speedometer to start with?
Gene
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Gene and Ben 1992 SVX LS AWD 110K - Liquid Silver 1994 SVX LSi AWD 128K - White Pearl (daily driver) 1994 SVX LSi AWD 95K - Emerald Pearl (sold) 1992 SVX LS-L AWD 115K - Dark Teal 4.44 swap (sold) |
#9
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Re: Tire Fitment
Quote:
What is a "cap lock?" ![]()
__________________
www.svxfiles.com The first SuperCharged SVX, ![]() the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway ![]() Fiberglass Hood thread My locker 4.44 Swap link |
#10
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Re: Tire Fitment
If I understand this interweb stuff right, cap lock means you are an Angry Bird.
![]() Gene
__________________
Gene and Ben 1992 SVX LS AWD 110K - Liquid Silver 1994 SVX LSi AWD 128K - White Pearl (daily driver) 1994 SVX LSi AWD 95K - Emerald Pearl (sold) 1992 SVX LS-L AWD 115K - Dark Teal 4.44 swap (sold) |
#11
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Re: Tire Fitment
Quote:
![]()
__________________
www.svxfiles.com The first SuperCharged SVX, ![]() the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway ![]() Fiberglass Hood thread My locker 4.44 Swap link |
#12
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Re: Tire Fitment
Nothing to see here I guess
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'92 SVX LS Pearl White - 6mt Last edited by dragoontwo; 12-11-2013 at 05:32 AM. |
#13
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Re: Tire Fitment
Sorry about that,dragon. I edited my original post and put in the 235/45R17 tire. Just delete your latest post and the confusion will be gone.
0.1mph difference at 120 and 2/100" of a difference in tire diameter is as perfect as you can get between these 2 tires.
__________________
. Subaru Ambassador 1996 Polo Green LSi #216..138,100 miles...SOLD JFICX8659TH100216.....Date of Manufacture: November 16, 1995..... Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan In-Service Date: January 2, 1997 "The Pristine Green Polo Machine” First Polo Green on the Network First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000) First 5000K HID factory fog lights (2007) First SVX JDM BBS wheels on a USDM SVX (2013) HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler. R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016 ![]() 2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback ![]() 2007 Mazda Miata MX-5 PRHT...102,000 miles. Plenty of parts, service and windshields. ![]() 4th Registered Network member —2/21/2001 My NEW locker..I...My Email..I..Wikipedia/SVX . . Last edited by svxcess; 12-07-2013 at 12:12 PM. |
#14
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Re: Tire Fitment
235/45/17 is really close or 245/40/17. The width of the 245 makes up for the shortened height.
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1992 Pearl White LS Owned since 2009 175k Miles STi Airlift Performance air suspension 2005 WRX manual swap Rear wheel drive ![]() K-Staff front bumper Delta Speed side skirts JDM clear corners Smallcar grille Subaru XT steering wheel Subaru XT shift knob First bagged SVX in the world Worlds first SVX on air suspension. Custom made (by myself) spare tire subwoofer. |
#15
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Re: Tire Fitment
with my 225/45R18 summer tires the speedo is dead on. with the stock size winter tires the speedo reads slightly high.
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Current Stable: 1992 SVX 1979 K5 Blazer Cheyenne 1956 Plymouth Belvedere - Daisy 1967 Chevy C20 1953 Chevy 210 1969 Plymouth Satellite 1949 Chevy Thriftmaster 1959 Chevy Apache 1951 Chevy Stepside 1969 Chevy Camper Special 1978 Ford F150 w/ stroked 460 1986 Volvo 740 turbo wagon 1999 GMC 2500 Creep Van 1994 Impreza Outback |
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