Largest Functional Tire Without Mods

[jamesl175]

Do you have a link to that Falken pressure chart, please? (For other sizes.)

Absolutely loving my Falkens also. Mine wears A/T4W in 255/80R17 on the stock steelies. I prefer narrow for wet road and wet snow performance, based on where I drive, and as a bonus the steering lightness/return also improved.

Yes - you just fill out the form here with your individual vehicle details and then they email across a document confirming the details. Quite a good service to be honest.

Tyre Approval Certificates / Tyre pressure recommendation

If car owners wish to make modifications to tyres/rims that diverge from the original vehicle combination, they must obtain official approval of the changes.

www.falkentyre.com

 

[Nimrod]

Hello ladies,

Anyone know what the largest tire size is that can be used without rubbing, binding, and without cutting the vehicle to make it fit?

I'm also wondering if there are any options out there for upper control arm replacement to properly lift the truck say... 4 inches, while retaining correct angles.

Lastly... I see that spare tire upgrade size will likely be limited by the left rear access door needing room to open before the right side... looks like about 2 inches further would be the max...?

I had 35" tyres fitted on mine with a 30mm lift... work really well and drives as well as the originals on steel sheels

 

[Paco Garcia]

255/85r17 Mickey T Baja AT. stock 17” steelies. Stock springs. 1000lbs of overland gear. No rub. Raises truck 2 1/8” @36F 40R psi compared to stock 265/70R17 BFGs.
View attachment 7875285View attachment 7875286View attachment 7875287View attachment 7875544View attachment 7875545View attachment 7875546

And still no rub aired down to 22F and 26R psi in the sand on the stops

Hello @Brandtnm , I don't know how you did the calculation, but according to my calculations the elevation you get in the vehicle due to the change of tires is around 3 cm, which does not match the 2 "1/8 (almost 6 cm) that you mention, there is a total difference in wheel height of just over 6 cm, which is 3 above the axle and three below

The calculation would be the following:
Series wheels: 265/70/17 where the total height of the wheel would be
17x2.54 + (265x70%) x 2 = 802.8 mm
Alternative wheel: 255/85/17 the total height would be
17x254 + (255x85%) x 2 = 865.3 mm

Total height difference between both wheels
865.3 - 802.8 = 62.5 mm
6.25 cm: 2 = 3.125 cm
increase in vehicle height at the same pressure 3.12 cm
Regards
Paco Garcia