Speedo will off about 1mph (you will going 1mph faster than indicated). As far as driveline stress....everybody's got their opinion, but with only that size...zippo! The overall diameter change is only about 1 inch and unless you buy solid concrete rims you should be fine as far as weight goes. Performance will suffer some though.
There's that calculator, I was having trouble finding it.
Only a 1.5% difference overall. Not bad at all.
So with a lift, say the 3in performance thing from Prerunner, would negate the need for the trimming???
__________________ Oddly enough, my daughter just made this same face!!!
My Truck: Born April 17, 2004, Purchased June 3, 2004
LE Canteen Crew, 4X4, BT, OR to which I added: SS Brake Lines, Frozen Rotor Front rotors with Hawk L/T pads(on their way!!!), Advanced Folding K-Cover ,SS Lund deflector, 4" Prerunner Greg Performance Lift, The first Zoomers SS exhaust ever shipped, Volant Gen III CAI, and Chick's Hulk engine cover, custom A-pillar with 1in guages (no guages yet though).
As Money Allows: Black Prism Dunder Grill, 20" LiquidMetal Magma Mirror Black rims and tires, Trutrac, Stillen (sway bar, and diff cover), and PrerunnerTraction Bars.
I just spoke with Discount Tire. They said for 20x10, they recommend an off set of +25 to +50 and that -13 would stick way out from the fenders. I mentioned the Jax guys and the guy said that they were flat wrong. They can get pretty much anything you want. Call 407-889-9113 and ask for Chris. Tell them your Armada friend sent you.
As for outer diameter, mine are 305-55-20. This is 33.4" in diameter and 12" wide.
There's that calculator, I was having trouble finding it.
Only a 1.5% difference overall. Not bad at all.
So with a lift, say the 3in performance thing from Prerunner, would negate the need for the trimming???
You don't need to trim stock. Just warp slightly the inner fenders. I did this with a heat gun and 5 minutes. You wouldn't need to do this at all with a PRG or lift.
__________________
Trucks are for raising, cars for lowering!
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'05 Armada LE 4x4, Red Brawn, Graphite, Tech Pkg, DVD, Bench, Nitto Terra Grapplers 305-55-20, MB Motor Express 20x9 rims, 6000k HID lows, Silverstar 9005 Highs and 893 Fogs
'92 Vette Vert-All Black,6-Spd,Sport Seats,ACC,K&N,Custom CD w/sub,Chrome GS Rims,Mich Pilot Sports(275-40-17F,315-35-17R) GS fender flares,Pwr Effects Exhst,Z06 Brakes,Hawk Pads,lowered,camberbrace,Hurst,Stage 3 Clutch,single mass alum flywheel,'96 glass wind top,HAL Qa1 Shocks
'04 G35 Sedan-All Black, Sport pkg, wing, every opt.
You wouldn't need to do this at all with a PRG or lift.
Depends on offset....I have PRG with that size and rub very slightly on the back inner fender. Have been meaning to bend/grind that pinch weld there but honestly it's so slight that it doesn't really bother me.
Price: I got mine the cheapest from a local guy here - $285 each. Still pretty freaking expensive, but they seem to be wearing well.
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