I agree there would be some rubbing but it you get absolute no rubbing on a 32" tire how bad could it rub on the 33" tires with the modifications done.
I agree there would be some rubbing but it you get absolute no rubbing on a 32" tire how bad could it rub on the 33" tires with the modifications done.
Well just to get my 32's to clear, I had to bend over the pinch weld and remold the plastic inner fender well. I think with 33's there would be an issue with the rear AC/Heater lines. I know not all XK's have them but mine does. I guess there is only one way to find out. My XK will need tires soon so maybe ill jump up in size and make them fit!
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
Yeah pretty much. When I measured my tires to recalibrate my speedometer they were right at 30.5 inches tall. They had about half tread on them at the time. But yes, they weight of the vehicle changes the rolling diameter of the tire.
2007 4.7 Liter XK | Front Modified OME HD Lift | Rear 4" Superlift | JBA UCA's | Rusty's Rear Adjustable Track Bar | Rysty’s Adjustable Upper and Lower Rear Control Arms w/Heim Joints | Mickey Thompson Classic III 17x9 Wheels | 315/70R17 Goodyear Duratracs | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front Electronic Locker | Rear Heat/AC Delete
another thing to keep in mind is that a 33" tire isn't. i had a brand new set of BFG A/T KO's that were 33/12.50/15 but they only measured about 31.75". you can go on most mfgr websites to get the true specs on their tires.
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We've been torn between street and off road.. Feeling that we may lean more towards the off road and loose the MPG's in the long run. But lifting is out of the question. So we may considered getting a cross over tire similar to the Michelin LX A/T2 series. Although we are keeping the same general size, we are getting a bit wider tire.. at least to keep a bit more on the road. I just want to know that the tires we get are going to last as well as preform "if" we venture off road again.
I would go with an MT that is less agressive and has a more even tread pattern. This way you get a decent ride and still have a pretty capable tire. Something like the Hankooks I have or the Firestone Dest. M/T, or the Nitto Trail Grappler M/T. These are a bit quieter than something like a KM2 (which I love) or some others.
Not quite relavant to the last post but....
Earlier in the thread the topic of different size tires make a difference on the calculation of MPG. Just wondering if this is a proper way to calculate the difference.
The original tires did 682.75 revs/mile.
My Tires do 638.1 revs/mile.
My current MPG on the dash reads 15.1.
15.1 x 682,75 (what size tire the Computer thinks I have) = 10309.525 (Total revs for 15.1 miles the computer counts)
Now divide this by what I actually have : 10309.525 / 631.1 revs per mile = 16.15 MPG.
Does this sound like the correct procedure to the the Mathmatically inclined? I guess I could express it as a ratio as well which would be 682.75 / 638.1 = 1.069. I can use this number multiplied by MPG to get the correct reading I think.
I have the 4.7L Flex and a lift. Does this sound right for what I have?
The 16.15 is city driving in Houston. I get about 17.7(dash readout) which would be 18.5-19ish, according to the math, on the HWY. (Staying right on the speed limit.)
Last edited by superacerc; 10-04-2010 at 07:45 AM.
2007 Commander 4.7L, QTII, OEM Towing Option, tow hooks, 2"OME + 1/4" rusty's leveling spacer, Bilstein 5150 Rear Shks, Rear sway bar removed, 4xguard front skid, Offroad Unlimited Defender Roof Rack, Hella 500FF lights, 265/70/R17 BFG KM2 M/Ts 1.5" Rough Country Wheel Spacers
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