Going Bigger - 5th Gen Tire Fitment Guide

[3wbdriver]

Thanks for that - quick question - getting my KM2s mounted today, no tpms - is that going to do anything to the way the truck runs (from the ecu), or am I just going to have the low pressure light on?

I've been looking at the TPMS light for 14 months now. Nothing else changes. It will flash for the first few minutes after any start up, then mine just goes steady on.

 

[brownbull]

This thread is intended to be a reference point for all of you that are looking to change tire size. First here are a few links to get you on the right path:
http://www.tirerack.com/ This link will help with selection of tires.
Tire Size Calculator - Compare Tire Sizes This link will confirm below chart data.
Wheel Backspace & Offset - Truck Wheel Sizes - Truckin' Magazine This article will help you understand the concept of wheel offset and backspacing.
HubGarage.com - Custom Wheel Offset Chart Photos This is a chart on offset and backspacing.

I have included known data regarding our 5th Gen OEM wheels in the table below. Have fun and happy hunting!
***UPDATE*** Added OEM TE wheel backspacing information

I have read many posts regarding tires and am still confused. Your chart is very helpful. I am ordering BF Goodrich KO2 275/70/17. I am putting them on TRD Pro Rims. Do you think I will have any issues. My vehicle will be a Trail Premium w/ KDSS. What do you think?

 

[3wbdriver]

I have read many posts regarding tires and am still confused. Your chart is very helpful. I am ordering BF Goodrich KO2 275/70/17. I am putting them on TRD Pro Rims. Do you think I will have any issues. My vehicle will be a Trail Premium w/ KDSS. What do you think?

You will likely end up with some slight rub in the front but really won't know until you mount them. You should have no issues with the body mount. Look up "5th gen front fender mod" in the search window at the top of the page and you can find how easy it is to fix that.

 

[marshal]

I have read many posts regarding tires and am still confused. Your chart is very helpful. I am ordering BF Goodrich KO2 275/70/17. I am putting them on TRD Pro Rims. Do you think I will have any issues. My vehicle will be a Trail Premium w/ KDSS. What do you think?

Let me simplify.

Backspacing is the distance from the wheel mounting surface to the backside wheel rim edge. If you laid a straight edge across the lip of wheel and measured straight down to the WMS you get backspace. You backspace numbers can change based on the width of the wheel.

Because of that variable you have the measurement of offset. Offset determines how far from the center line your WMS is. Plus value says the WMS is being pushed towards the face of the wheel. Negative value says the WMS is being pulled to the backside of the wheel (deep dish). A value of 0 says its in the dead center.

So, a 8" wide rim with 0 offset (centered WMS) has 4" of backspace.

Change that to a 9" wide rim with 0 offset and you have 4.5" of backspace.

So when you're wheel shopping and you come across a 17x9 rim with x offset and x backspace. You want to correlate the difference in values to your stock rim since we don't have much room to work with on these 5th gens. The closer you get it to the suspension components, obviously the more chance it will rub and you narrow the vehicle. The further out you place the WMS the more chances you'll get of rubbing the front bumper valance or getting your tire into the body mount and fender etc.

 

[3wbdriver]

Let me simplify.

Backspacing is the distance from the wheel mounting surface to the backside wheel rim edge. If you laid a straight edge across the lip of wheel and measured straight down to the WMS you get backspace. You backspace numbers can change based on the width of the wheel.

Because of that variable you have the measurement of offset. Offset determines how far from the center line your WMS is. Plus value says the WMS is being pushed towards the face of the wheel. Negative value says the WMS is being pulled to the backside of the wheel (deep dish). A value of 0 says its in the dead center.

So, a 8" wide rim with 0 offset (centered WMS) has 4" of backspace.

Change that to a 9" wide rim with 0 offset and you have 4.5" of backspace.

So when you're wheel shopping and you come across a 17x9 rim with x offset and x backspace. You want to correlate the difference in values to your stock rim since we don't have much room to work with on these 5th gens. The closer you get it to the suspension components, obviously the more chance it will rub and you narrow the vehicle. The further out you place the WMS the more chances you'll get of rubbing the front bumper valance or getting your tire into the body mount and fender etc.

Lol! Different words, same definition..... :hatsoff:

http://www.toyota-4runner.org/5th-gen-t4rs/156378-5th-gen-tire-fitment-guide-11.html#post1962035

And while I'm not 100% positive I believe the TRD Pro wheels are 7" with a probable 4.5" backspace. So they shouldn't be much of an issue. My suggestion was that your 275/70's might rub because they are taller. I do understand that the TRD Pro's are getting the front fender lip trim when they have the Pro rims and Nitto Terra Grappler 265/70's installed at the port.

 

[marshal]

Lol! Different words, same definition..... :hatsoff:

http://www.toyota-4runner.org/5th-gen-t4rs/156378-5th-gen-tire-fitment-guide-11.html#post1962035

You gotta talk to the people bruh

 

[brownbull]

This thread is intended to be a reference point for all of you that are looking to change tire size. First here are a few links to get you on the right path:
http://www.tirerack.com/ This link will help with selection of tires.
Tire Size Calculator - Compare Tire Sizes This link will confirm below chart data.
Wheel Backspace & Offset - Truck Wheel Sizes - Truckin' Magazine This article will help you understand the concept of wheel offset and backspacing.
HubGarage.com - Custom Wheel Offset Chart Photos This is a chart on offset and backspacing.

I have included known data regarding our 5th Gen OEM wheels in the table below. Have fun and happy hunting!
***UPDATE*** Added OEM TE wheel backspacing information

Hello,
Your chart is very helpful. However, I have been reading all the comments on running 275/70/17 and it seems that the majority indicate that they will rub however your chart indicates that they will not rub. I know that I am beating a dead horse. I don't want to have to get carried away making mods so I am hesitant to go with 275 vs stock 265's. I would appreciate your advice and feedback on this issue.

 

[1engineer]

Hello,
Your chart is very helpful. However, I have been reading all the comments on running 275/70/17 and it seems that the majority indicate that they will rub however your chart indicates that they will not rub. I know that I am beating a dead horse. I don't want to have to get carried away making mods so I am hesitant to go with 275 vs stock 265's. I would appreciate your advice and feedback on this issue.

Go back and re read those threads that indicated rubbing with 275's. Pretty sure those guys are either running spacers or wheels with different offsets.

 

[my14runner]

Hello,
Your chart is very helpful. However, I have been reading all the comments on running 275/70/17 and it seems that the majority indicate that they will rub however your chart indicates that they will not rub. I know that I am beating a dead horse. I don't want to have to get carried away making mods so I am hesitant to go with 275 vs stock 265's. I would appreciate your advice and feedback on this issue.

Morning,

I have 275/70/17's on the TRD Pro wheels 17x7 and when I was stock I did not rub one bit even wheeling no rub. What gets people into trouble as previously mentioned, is when they use wheel spacers wider wheels too much positive or negative offset ect because that changes the dynamics of the whole thing. I can tell you this that with stock 17x7 SR5 wheels and 275/70/17's you should not rub at all. I am running BFG TA KO's

 

[03_4x4Runner]

Hello,
Your chart is very helpful. However, I have been reading all the comments on running 275/70/17 and it seems that the majority indicate that they will rub however your chart indicates that they will not rub. I know that I am beating a dead horse. I don't want to have to get carried away making mods so I am hesitant to go with 275 vs stock 265's. I would appreciate your advice and feedback on this issue.

The only place my 275s rubbed slightly (and only under just right conditions)was on the front end back side on the little bump on the cover that sets on the mud flap. I removed it, heated it up with a heat gun and clamped it in a vise to flatten it. After reinstalling there is no more rub.

 

[wfo9]

Let me simplify.

Backspacing is the distance from the wheel mounting surface to the backside wheel rim edge. If you laid a straight edge across the lip of wheel and measured straight down to the WMS you get backspace. You backspace numbers can change based on the width of the wheel.

Because of that variable you have the measurement of offset. Offset determines how far from the center line your WMS is. Plus value says the WMS is being pushed towards the face of the wheel. Negative value says the WMS is being pulled to the backside of the wheel (deep dish). A value of 0 says its in the dead center.

So, a 8" wide rim with 0 offset (centered WMS) has 4" of backspace.

Change that to a 9" wide rim with 0 offset and you have 4.5" of backspace.

So when you're wheel shopping and you come across a 17x9 rim with x offset and x backspace. You want to correlate the difference in values to your stock rim since we don't have much room to work with on these 5th gens. The closer you get it to the suspension components, obviously the more chance it will rub and you narrow the vehicle. The further out you place the WMS the more chances you'll get of rubbing the front bumper valance or getting your tire into the body mount and fender etc.

Don't know how I ended up in this thread, but there is one bit of information above that is inaccurate and often throws people off.

Rims are advertised with a width that does not include the lip (don't ask me why). But you need to include the lip for backspacing... So the rule is to add 1" to the advertised width. A 17x8 0 offset (advertised) rim is not 4" backspace it is 4.5". If you manually measure lip to lip and get 9" then it is considered to a by an 8" wide rim.

 

[marshal]

Don't know how I ended up in this thread, but there is one bit of information above that is inaccurate and often throws people off.

Rims are advertised with a width that does not include the lip (don't ask me why). But you need to include the lip for backspacing... So the rule is to add 1" to the advertised width. A 17x8 0 offset (advertised) rim is not 4" backspace it is 4.5". If you manually measure lip to lip and get 9" then it is considered to a by an 8" wide rim.

You're totally correct. I guess I got lazy trying to explain it

 

[4R Play]

Hey,
I'm a new happy & excited owner of a 2015 Trail and looking to some proper tires for the first upgrade.

Is there a need to wait until the break-in period is over before putting on larger tires? (Only looking at going up to 275/70/17 , C or E load - not sure)

1engineer - great chart (for those that read it)!

Thanks,

 

[1engineer]

Hey,
I'm a new happy & excited owner of a 2015 Trail and looking to some proper tires for the first upgrade.

Is there a need to wait until the break-in period is over before putting on larger tires? (Only looking at going up to 275/70/17 , C or E load - not sure)

1engineer - great chart (for those that read it)!

Thanks,

No you'll be fine.

 

[farsider3000]

Go back and re read those threads that indicated rubbing with 275's. Pretty sure those guys are either running spacers or wheels with different offsets.

Need your advice please....
I would like to purchase Fuel Octane 17x8.5 -5 offset (4.5 backspace) wheels and run 265 70 R17 BFG KO2. Any experience with a slightly wider wheel with slight negative offset like this on a non-lifted 2015 limited?

I am also having problems determining if the original TPMS from my 2015 limited will fit in the Fuel Octanes without any issues.

 

[RNg125]

Great index, any chance on adding something for 16" wheels? I kind of like having nice fat sidewalls, and large rims are not really my thing.

 

[96r50]

Have you tried putting 16" wheels on? They don't fit.

 

[tberry5000]

Question on 255/80/17

I am pretty new to the Toyota 4runner and i own a 2014 SR5 with the Toytec Boss setup in the front. I want to keep the stock SR5 that truck come with but want to slap some new tires on it next. I am looking at the 255/80/17 Cooper Discover S/T Maxx as well as the BFG KM2 but will adding those tires to the stock rim require me to put spacers on?

My next move is to replace the UCA's and crank the Boss setup to 2.8 rather than the 2.2 its set at now.

Thanks

 

[ILIR]

Been trying to understand this tire and wheel stuff, and I can't seem to figure out if I'll have any issues running a 17x8.5" wheel with -6mm offer using the stock tires, no lift or anything yet but have the 2.5" Daystar leveling kit coming in. All the wheels I like are either a -6mm offset or like +25mm, would the -6mm be OK?

Thanks

 

[Magnetic4R]

Been trying to understand this tire and wheel stuff, and I can't seem to figure out if I'll have any issues running a 17x8.5" wheel with -6mm offer using the stock tires, no lift or anything yet but have the 2.5" Daystar leveling kit coming in. All the wheels I like are either a -6mm offset or like +25mm, would the -6mm be OK?

Thanks

You should be good with the -6, go for it.