Is a 30" diameter tire doable on a lifted 2wd?

allsierra123 · Posted: Fri Nov 06, 2009 6:37 pm Post subject:

my swampers are bias ply they are pretty loud. one of my mane objections to them.
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91 Vanagon GL. 1.9TD Conversion (Been making short trips around town.)
81 Vw rabbit 1.6 Diesel.

freshintulsa · Posted: Sat Nov 07, 2009 7:06 am Post subject:

i have 225/75/16s on my stock spring 85, which is about 18.5 to the bottom of the fender from the center of the hub. i had to do a LOT of work to get these to "fit". i use fit loosely. they still rub on turning while the spring compresses a "little. driving straight, it wont rub no matter how compressed. but turning is where its gonn a get you. i dont think you are gonna want to do this, but thats just me. you have a higher lift thn me, may i ask what kind of lift it is? so you might have better luck with the size ih ave, but just barely. i would go a little smaller. good luck.
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"go slower, go lower!!!"

85 westy svx
225/75/16's, rmw bumpers,
the go anywhere 2wd van!
SA grill w/ h4s and relays

89 wolfsburg/ bluestar.... finished the stick to automatic conversion,
tiico motor
the river ride

Alaric.H · Posted: Sat Nov 07, 2009 7:33 am Post subject:

By the time you put tall tires on it will be cheaper to find one of those european R&P that are taller for a AT trans they sell for about 1000-1200 dollars

rolfsky · Posted: Sat Nov 07, 2009 8:43 am Post subject:

Swampers might be part of the problem w/ low mileage due to rolling resistance? From what I've read, more tread== less mileage.

What about some Nokian Hakka Van C's? Nice highway tread designed for passenger vans.

They make a set that is 205/70/R15, load rating 106, 794 revs/mile.

Just 2.5% "taller" than a stock 185R14 tire.

http://www.nokiantires.com/tyre?id=11895&group=3.02&name=Nokian+Hakka+C+Van

http://www.nokiantires.com/files/nokiantires/PDF/HAKKA_C.pdf
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'85 Merian brown Vanagon Westfalia

Vanagonner · Posted: Sat Nov 07, 2009 9:59 am Post subject:

Rolling Resistance Coefficients for 34 Passenger Tires, Measured When New by Ecos Consulting in 2002
.
Tire Manufacturer/ Tire Line/ Size/ RRC
.
Bridgestone/Firestone B381 P185/70/R14 0.0062
Continental Ameri-G4S WS P235/75/R15 0.0078
Goodyear Invicta GL P235/75/R15 0.0081
Continental ContiTouring Contact CH95 P205/55/R16 0.0083
Uniroyal Tiger Paw AWP P185/70/R14 0.0088
Michelin Energy MXV4 Plus P205/55/R16 0.009
Goodyear Eagle RS A P205/55/R16 0.0092
Bridgestone/Firestone Long Trail T/A SL P245/75/R16 0.0092
Michelin Pilot Sport Cup P205/55/R16 0.0092
Sumitomo HTR 200 P185/70/R14 0.0092
Pirelli P6000 P205/55/R16 0.0095
General Grabber AP SL P235/75/R15 0.0097
Goodyear Integrity P185/70/R14 0.0097
Bridgestone/Firestone FR680 WS P235/75/R15 0.0102
Dunlop SP40 A/S P185/70/R14 0.0103
Michelin LTX M/S P245/75/R16 0.0103
Bridgestone/Firestone Dueler A/T D693 P245/75/R16 0.0103
Bridgestone/Firestone Wilderness AT P235/75/R15 0.0105
Kumho Venture AT P245/75/R16 0.0105
Bridgestone/Firestone Potenza RE92 P185/70/R14 0.0107
Michelin Harmony P185/70/R14 0.0107
Goodyear Regatta 2 P185/70/R14 0.0108
Michelin Symmetry P185/70/R14 0.0108
Bridgestone/Firestone Turanza LS-H P205/55/R16 0.0109
Bridgestone/Firestone Turanza LS-T P185/70/R14 0.0109
Bridgestone/Firestone Affinity Touring P235/75/R15 0.011
Michelin Pilot Sport P205/55/R16 0.0111
Goodyear Eagle F1 GS-D3 P205/55/R16 0.0112
Dunlop SP Sport A2 SL P205/55/R16 0.0113
Goodyear Aquatred 3 P185/70/R14 0.0113
Goodyear Conquest AT P245/75/R16 0.0114
Bridgestone/Firestone Firehawk SZ50EP P205/55/R16 0.012
Goodyear Eagle GT II P205/55/R16 0.0121
Michelin Pilot Sport A/S P205/55/R16 0.0133
.
Mean 0.0102
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Sage
'82 n/a Diesel Westfalia full option camper

allsierra123 · Posted: Sat Nov 07, 2009 2:32 pm Post subject:

Thanks for all the info guys. I went out and bought a gps last night. when we were driving the other day. my wife asked me to stop speeding i told her i wasnt. So after researching about tires and gear ratios and what not I began to suspect my speedo was not accurate. so i went out on the local highway here posted limit is 60mph. I put the van up to 60 mph according to the speedo and got a reading of 74-75 mph. I was a bit shocked the old wbx always had trouble holding those speeds. It was old and tired of course. So that would explain my gas mileage I was traveling at close to 8o mph on my trip the other day. And im not getting an accurate reading on my odometer so i have no idea what kind of mileage im getting.
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91 Vanagon GL. 1.9TD Conversion (Been making short trips around town.)
81 Vw rabbit 1.6 Diesel.

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Is a 30" diameter tire doable on a lifted 2wd?
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