11-14-2018, 02:36 PM
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#1
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Limited Aftermarket Tire Sizing
Hello! I am pulling out XREAS, ditching the stock wheels and putting in a Toytec Boss lift with 17" tires (Rims chosen are 17"x9"). The installer recommended 285's but I am worried about the mpg hit I will take. I have seen some others put 265's with Spidertrax spacers but a little weary of the additional maintenance that goes along with those. I also thought about 275's but the Falken Wildpeaks in the load range I want don't come in that size.
I calculated a 2 mpg hit on fuel economy, based on size difference between the 265 vs 285...is this reasonable? With my current driving and current fuel prices, that's almost ~$240 per year.
This will likely be a pavement queen, I hardly ever go off road.
Thoughts?
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Last edited by luderiffic; 11-14-2018 at 02:40 PM.
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11-14-2018, 02:42 PM
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#2
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11-14-2018, 03:03 PM
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#3
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Quote:
Originally Posted by luderiffic
I calculated a 2 mpg hit on fuel economy, based on size difference between the 265 vs 285...is this reasonable? With my current driving and current fuel prices, that's almost ~$240 per year.
This will likely be a pavement queen, I hardly ever go off road.
Thoughts?
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Curious how you calculated a MPG change on paper, what is this based on?
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'93 Toyota LandCruiser VX Ltd 4.2TD - 3X e-lockers, winch, factory fridge, 285/75/16E Duratracs, ICON Stage 1 3" lift, GTurbo Grunter Extreme
'04 Lexus GX470 Ultra Premium - Dobinsons 2F/1R lift, Tandem 612's w/ 265/70/17 Wildpeaks, XD HID lows
'15 Lexus GX460 - FJC 6-spokes w/ 265/65/17C Duratracs Weathertech HP & Canvasback liners
'15 4Runner Limited - 1" Cornfed level, 255/75/17SL Duratracs on FJC 8-holes, XD HID lows, Sprint Booster, Canvasbacks & Husky Liners - SOLD
'96 Toyota Hilux Surf SSR-G 3.0TD RIP - 265/75/16C Duratracs, '99 tall fronts, OME 906's rear
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11-14-2018, 03:11 PM
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#4
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I remember seeing some posts about Limited trim only getting 15-16mpg with 285's. I only get 19 now with 245, so I just implied I'd take a 2mpg hit with 265's and 4 with 285's.
This is why I asked the question if it was unrealistic. Thanks!
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11-14-2018, 03:17 PM
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#5
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Quote:
Originally Posted by luderiffic
I remember seeing some posts about Limited trim only getting 15-16mpg with 285's. I only get 19 now with 245, so I just implied I'd take a 2mpg hit with 265's and 4 with 285's.
This is why I asked the question if it was unrealistic. Thanks!
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my average only dropped .5-1mpg when switch from 20s to 17s w/ 265s then 285s. havent seen a hit when switching from 265 to 285. 16.5 mpg avg, mostly traffic. occasional highway.
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11-14-2018, 03:29 PM
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#6
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Limited Aftermarket Tire Sizing
Don’t do 285 if your truck is a pavement queen. The mpg drop is real and the truck will become significantly more sluggish especially on a Ltd that’s equipped with full time 4wd.
Do 255/75/17 instead,it performs better on roads.
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11-14-2018, 05:22 PM
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#7
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I'm getting an average of about 14 mpg with 285's. 95% city driving, but also have other mods with additional weight. See my sig. Also note your truck will kick out of overdrive a lot more on the highway on shorter/smaller inclines at 70+mph than with OEM tire size.
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Michael
2021 Pro Lunar Rock: RCI tranny/transfer case/tank skids, Victory roof rack
2014 LE Nautical Blue: 285/70R17 Falken A/T3W, FX Pro wheels, Fox TRD Pro suspension with Wescott lift, Dobinson UCA's, Metal Tech sliders
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11-14-2018, 10:14 PM
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#8
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I've got 265/70R18 on Falken Wildpeak AT/3 (E load rating). I'm getting just shy of 17 mpg, and most of my driving is county roads and freeway driving.
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********************************************
||2018 Limited Magnetic Gray Metallic||MetalTech Sliders (stock rocker delete)||Icon Stage 5 Suspension (Stage 7 reservoirs)||Falken Wildpeak A/T3W (265/70/R18) on FN BFD Matte Black wheels||Diode Dynamics LED low beams, fogs, and all interiors||TRD CAI and Borla Catback Exhaust||
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11-15-2018, 02:18 AM
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#9
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Quote:
Originally Posted by MrGainzz
Don’t do 285 if your truck is a pavement queen. The mpg drop is real and the truck will become significantly more sluggish especially on a Ltd that’s equipped with full time 4wd.
Do 255/75/17 instead,it performs better on roads.
Sent from my iPhone using Tapatalk
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2nd this ^^
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11-15-2018, 11:40 AM
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#10
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Quote:
Originally Posted by Snoranger
I've got 265/70R18 on Falken Wildpeak AT/3 (E load rating). I'm getting just shy of 17 mpg, and most of my driving is county roads and freeway driving.
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Do you have a pic of your setup? What type of rims do you have?
This guy's setup really intrigued me, but haven't seen it on a Limited. He put spacers on his 265's to push the wheels out. Not sure if that will be needed but I really like the look of the wheels flush. From what I have read, the offset affects how far the rim gets pushed out.
Lifts with 265/70/17, issues?
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11-15-2018, 04:36 PM
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#11
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I have a similar story: 2013 Limited, removed XREAS, added 3 inch Toytec lift, switched to 265/70/17 Cooper AT3's on OEM trail rims.
As with the poster above, I would estimate 0.5 to 1 mpg decrease. Current avg mpg is 18.1 mpg.
I second some of the others - I would not install the 285's on a pavement queen if you are the least bit concerned about mpg.
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2013 Limited Shoreline Blue Pearl, Ham Radio installed (Kenwood D710A and V71A with APRS), Trail Wheels with Michelin X-ice 265/70R17 tires
FS: Full set of 20" Limited OEM wheels + spare, see classifieds for pictures
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11-17-2018, 04:34 AM
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#12
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Quote:
Originally Posted by luderiffic
Do you have a pic of your setup? What type of rims do you have?
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Falken Wildpeak A/T3W (265/70/R18) on FN BFD Matte Black wheels
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********************************************
||2018 Limited Magnetic Gray Metallic||MetalTech Sliders (stock rocker delete)||Icon Stage 5 Suspension (Stage 7 reservoirs)||Falken Wildpeak A/T3W (265/70/R18) on FN BFD Matte Black wheels||Diode Dynamics LED low beams, fogs, and all interiors||TRD CAI and Borla Catback Exhaust||
Last edited by Snoranger; 11-17-2018 at 04:45 AM.
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11-17-2018, 07:07 AM
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#13
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Join Date: Nov 2018
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OP, Snoranger’s limited 4Runner tire size works out to be 32.61” tall with a 265(10.43”) width. This narrow, tall tire provides better rolling resistance, but, due to the height reduces torque and will feel more sluggish and reduce mpg. A 285-70-17 looks great and works out to be a 32.71” tall tire with an 11.22” width, but, will be worse on mileage and power by about 1.5-2mpg over a 265-70-17. I run a 275-70-17, (32.16” x 10.83” width), and IMO, think it is a perfect overall size for looks, mpg, power, etc. Speedometer/odometer is only off 1.8% over my factory equipped 265-70-17 (31.61” tall x 10.43” width). Not worth recalibration in my case. You can also still fit a 275-70-17 under the truck in the spare tire location as opposed to a 285-70-17. Pic of my 4Runner with 275-70-17. Stock TRD Pro height, which, is 1” taller than other factory 4Runner suspensions. Tire sizes will vary slightly from different manufacturers. Good luck with your decision.
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11-17-2018, 10:16 AM
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#14
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Choose your priority, the look of larger tires or slightly better MPG. Oh and with a 17x9 rim and 285’s be prepared for rubbing, and if you put wheel spacers on it’s almost guaranteed.
I was fine with 265’s with my setup, going to 285’s hasn’t made much difference in mileage or drive ability into the mtns.
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2011 Silver LE, 3rd row, 285 GY Duratracs, Elka remote with adjusters/Icon Overland springs, SPC UCA's, RCI skids, Shrockworks step slider with OE Trail rockers, CBI rear bumper, Indel B fridge, SPOD, and more...
Build link:
http://www.toyota-4runner.org/5th-ge...el-thread.html
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