I think they put 32psi into each tire on my 255/45-17 they look a little low wondering if I can put more air into them. They say 44psi is max thinking about running 40psi. What ya think?
 |
-
sigpic1986 Crown Victoria 302 Cold Air,Mac Shorty headers, Full Dual Exhaust with Super Forty Flows, Wagon Suspension with a Full Sound System Replacement 1/4 time 17.486 @ 77.43mph -
Anywhere from 30-40 is generally fine. It's pretty much whether you want tighter handling and better fuel economy (higher pressure) or a softer ride and more grip (lower pressure)
85 4 door 351 Civi Crown Victoria - Summer daily driver, sleeper in the making, and wildly inappropriate autocross machine
160KMs 600cfm holley, shorty headers, 2.5" catted exhaust, 255/295 tires, cop shocks, cop swaybars, underdrive pulley, 2.73L gears.
waiting for install: 3.27's, Poly bushings, boxed rear arms, 2500 stall converter, ported e7's, etc
06 Mazda 3 hatch 2.3L 5AT (winter beater that cost more than my summer car) -
800,000,000 PSI should work just fine.Comment
-
i would run them at 44 psi......better handling
1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
2006 Lincoln Town Car Signature. Stock for now
1989 Ford F-250 4x4 much much more to come, sefi converted so far.
1986 Toyota pickup with LSC wheels and 225/60/16 tires.
2008 Hyundai Elantra future Revcon toad
1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)
please be patient, rebuilding an empire!
Comment
-
i try to keep all mine at like 40-42 (sidewall says 44)http://secondhandracing.com/Home.aspx
http://secondhandradio.com/
R.I.P. Jason P Harrill 6-12-06
http://www.grandmarq.net/vb/showthread.php?t=5634Comment
-
The max ratng on the sidewall means what the tire can hold when expanding. So by puttung 40psi in a tire thats has a 44psi max doesn't leave much room for expanding air when the tire heats up which can end badly...I would just put stock 32psi..read the sticker on your rear passenger door..(if it's still there) Radials are suposed to have a lil budge at he bottom.
Comment
-
Read your owners manual or the door sticker.
The max on the tire is the max pressure the tire can handle, not the CAR manufacturers specification.
The proper way to do it is a chalk mark across the tread and adjust it until the mark is evenly worn.
Maxing a tire out might make it seem like it handles better becuase the tire will react quicker, but more times than not will have less overall grip because the over inflation leaves less of a contact patch on the road.Builder/Owner of Badass Panther Wagons
Busy maintaining a fleet of FordsComment
-
32 in my turbines, 35 in my bullitts, 33 in my 05 stang wheels...dont know why but that is what i run.~David~
My 1987 Crown Victoria Coupe: The Brown Blob
My 2004 Mercedes Benz E320:The Benz
Originally posted by ootdega
My life is a long series of "nevermind" and "I guess not."
Originally posted by DerekTheGreat
But, that's just coming from me, this site's biggest pessimist. Best of luck
Originally posted by gadget73
my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.
Comment
-
definitely dont max them out... they are difference size rims and tires than the car was designed for, therefore you are re-engineering the vehicle...Id stick with 30-32-Phil
sigpic
+1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.
+2003 Acura CL Type S 6-speedComment
-
yeah, but these cars never came with 17" wheels/tires and they are more geared for grandpa/grandma driving and for comfort.Originally posted by Titanius Anglesmith View Post2003 Town Car Signature - 3.27 RAR, Dual exhaust and J-mod - SOLD 9/2011
89 Crown Victoria LX HPP -- SOLD 9/2010
88 Grand Marquis LS - The Original -- Totaled 5/2006
I rebuild AOD/AODE/4R70W/4R75E transmissions....Check out my Facebook page: https://www.facebook.com/pages/North...48414635312478Comment
-
Originally posted by 88grandmarq View Post
And Explorers were sent out with 26psi door stickers....
I'd run them around 38-40, but as Mikey sayeth....the chalk mark doesn't lie.Comment
-
Thats the cold inflation pressure. You can safely run 44 psi cold, and the air will not expand past the tire's safety limitations.Originally posted by chitownvic View Post
The chalk line is very valid, and you'll find the optimal pressure changes even with tire brands. I used to run 40, but the new tires like 35. The Mark VII likes 32. I really should chalkline them just to see how my seat of the pants adjustments compare to a real test tho.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
-
I run mine at 50psi, max is 55. Chalk line says 50psi in 235/75-15 offroad truck tires in 6.5"-wide turbine wheels under a 4000 lbs Lincoln is a very good combination. Handling and ride, as expected, suck. Oh well, at 55mph it matters none, I got all the traction I need all year round
Comment
-
you guys who are over-inflating your tires, how many miles do they last? 10K?-Phil
sigpic
+1982 Ford LTD-S Police Car. Built 351w, Trickflow 11R 190 Heads, Holley Sniper EFI, RPM Intake+ Hyperspark dizzy, WR-AOD, Full exhaust headers to tails. 3.27 Trac-Lok Rear. Aluminum Police Driveshaft. Speedway Springs+Bilstein Shocks, Intermediate Brakes, HPP Steering Box.
+2003 Acura CL Type S 6-speedComment
-
Mine seem happy at 35 - 38.2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIPComment
Comment