Does anybody know the tire height for these. I need to program for my gears.
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'77 K5 rock-crawler project
'79 T/A: WS6, 400 4sp, 40K miles; Completely stock and original
'87 Lifted 3/4 ton Suburban (Big Blue) plow truck
'94 Roadmaster Wagon (The Roadmonster) 200,000 miles and still going
'97 T/A: (SLP 1LE Suspension, SB, & sfc(s), Loudmouth); 4.10s; B&M Ripper; R/A Hood; ZR1s
My daily drivers: '06 Jeep Liberty CRD (wife); '01 Yukon Denali XL (me); '03 Stratus Coupe (me)
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas Jefferson -
315/35-17 = 25.66"
275/40-17 = 25.66"
245/50-16 = 25.66"
All of those are equivalent to the stock tire size with "Z" rated tire option.Fred
381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor -
Thanks Fred. I knew they were the same height as the stock 245/50/16s, but I didn't know what that was. I thought it was kinda dumb that my HPPIII required me to put a number in when I changed the gears. I put in 26 so I was close; I will make the change tonight.
THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'77 K5 rock-crawler project
'79 T/A: WS6, 400 4sp, 40K miles; Completely stock and original
'87 Lifted 3/4 ton Suburban (Big Blue) plow truck
'94 Roadmaster Wagon (The Roadmonster) 200,000 miles and still going
'97 T/A: (SLP 1LE Suspension, SB, & sfc(s), Loudmouth); 4.10s; B&M Ripper; R/A Hood; ZR1s
My daily drivers: '06 Jeep Liberty CRD (wife); '01 Yukon Denali XL (me); '03 Stratus Coupe (me)
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas JeffersonComment
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I think the HPP forces you to choose 1/4" increments, unlike the actual factory programming, which lets you enter any two decimal number you want. Since the HPP forces you to choose 25.50 or 25.75, try both and see which gives you the best speedo results. I managed to hold my Formula at a constant 60mph for 40 miles on the PA Turnpike to calibrate it against the mile markers.... both speedo and odo - using the PCM data for rpm and mph. Back calculating, I found that 25.58" produced the most accurate results. At the time, I was running 275/40-17 GoodYear GS-C's.Fred
381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motorComment
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I am not impressed with the HPPIII solution to this. It seems as though, the stock tire height should be an option. I am confused as to why it prompts me for changing my tire height when I change the gear ratio. To me, it stand to reason that most people, have a stock tire configuration and change gears. Some people put slicks on the car, but could care less what the spedo is doing on the 1/4 mile. I don't get it. Someday, I will get LT1 edit, when I need it
Oh, could you recommend a good PC Software based scanning tool that I could use on my cars? I have mostly OBDII cars, but my '94 Roadmaster is ODBI. I would love to start using my laptop, and scan it when it is running, etc.'77 K5 rock-crawler project
'79 T/A: WS6, 400 4sp, 40K miles; Completely stock and original
'87 Lifted 3/4 ton Suburban (Big Blue) plow truck
'94 Roadmaster Wagon (The Roadmonster) 200,000 miles and still going
'97 T/A: (SLP 1LE Suspension, SB, & sfc(s), Loudmouth); 4.10s; B&M Ripper; R/A Hood; ZR1s
My daily drivers: '06 Jeep Liberty CRD (wife); '01 Yukon Denali XL (me); '03 Stratus Coupe (me)
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas JeffersonComment
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25.67 according to tire&rim assoc.
(hee heee..gotcha by 1/100th fred)..........
(duckin and runnin)
The Goldens: Reno and Rocky
2008 C6, M6, LS3, Corsa Extreme C/B, (it flys) & 2008 Yukon loaded (Titanic), 03 Ford Focus..everydaydriver.
Wolfdog Rescue Resources, Inc.:http://www.wrr-inc.org
Home Page: http://www.renokeo.com
sold: 97 Firehawk, 97 Comp T/A, 2005 GTO, 2008 Solstice GXP turbo.Comment
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I used the 26.75" setting with the HPP and worked better than the 26.5". However, I tested the difference by driving at a steady speed and passing through one of those police radars that they put on the street to tell you how fast you're going. I made sure there were no other cars around when I did this too.
1996 Arctic White Z28, A4, K&N CAI, TByrne MAF ends, BBK Twin-52mm TB, TB Bypass, SLP 1 3/4" Shorties, Richmond 3.42's, Dynomax Bullet Muffler W/Turn Down, BMR Adj. Panhard, EIBACH Pro-Kit, AFS ZR1 Wheels W/17x11" out back!
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