305/65/17 on 5th Gen 4Runner

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NCArcher

New member
In a sea of 285/70's there is very little information on fitting 305/65's on our 5th gens. After going this route on my 2014 trail, I wanted to start a thread to help others out who might want to consider this option.

Currently, I have a 3" Toytec boss lift. I actually got about 3 1/4 inches of lift from center of front hub to fender. I am running 305/65 BFG KO2's on Icon Rebound wheels. The wheel specs are 17 x 8.5, 4.75" backspacing, 0 mm offset.

I intentionally went with a low offset wheel because I was afraid I was going to run into some serious rubbing issues. Prior to installing the wheels I removed the front mudflaps and pulled the fender liner in front of the front wheels forward as far as possible. You can see I was able to relocate it just in front of the first stock bolt location. This was the same on both sides. I planned to get a body mount chop after install.

After installing the wheels and tires, I have been very surprised by the lack of rubbing I have had. I had a bit of rubbing on the driver side front bumper at full lock. I trimmed about an inch off of the plastic at an angle and fixed the issue. I have done some light/moderate offroading with no additional rubbing issues. I have not needed to do a body mount chop.

I suppose my point of this thread is that the 305's are not as scary as you may think. With a conservative wheel and a good lift, you are not going to see severe rubbing. I have also only seen about a 1mph drop in gas mileage around town and a couple mpg on trips.

I have some dirt king UCA to install and eventually plan on putting on some spacers. I will update with info on how that changes things. I expect the spacers to necessitate the bmc.
 

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305/65 is easy to fit. There are guys running 17x9 -38 with 305/70’s. I agree, we are past the point of the standard 285 questions. I’m currently running 17x9 -38 with 295/70’s (barely 2.5” lift in front) and it was really easy to fit. I’ll be slapping 35’s on these wheels next month. Still not as big as the guys with 37’s.

Biggest downfall with running over a 285/70 is not figment. It’s gearing. I hated my 295s with stock gears. Now I have 4.56 and the tire isn’t big enough IMO for 4.56 gears. Really need to go with a 4.10 but then it isn’t worth it.

Problem solved, go to 35s.

4R looks good! Glad you went a different path than most.


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dot_tom said:
305/65 is easy to fit. There are guys running 17x9 -38 with 305/70’s. I agree, we are past the point of the standard 285 questions. I’m currently running 17x9 -38 with 295/70’s (barely 2.5” lift in front) and it was really easy to fit. I’ll be slapping 35’s on these wheels next month. Still not as big as the guys with 37’s.

Biggest downfall with running over a 285/70 is not figment. It’s gearing. I hated my 295s with stock gears. Now I have 4.56 and the tire isn’t big enough IMO for 4.56 gears. Really need to go with a 4.10 but then it isn’t worth it.

Problem solved, go to 35s.

4R looks good! Glad you went a different path than most.


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Click to expand...

Thanks and I agree. I will definitely be going bigger with my next set. I wish I would have this time, but as I said, the lack of information on people running this size caused me to hesitate. It seems you have the vast majority going 285/70 and then on the other side are people running 35's. not much info in between.
 
I have 305/65/17's. They rub a lot more than 285's.

My wheel set up is 4.75 backspacing and -12 offset. They rubbed a little before the wheel spacers. With the wheel spacers I had to get pretty aggressive with the cutting. I had to cut BMC, some fender liner, and the end caps of the rocker panel. This is with my caster set as far forward as possible. I cut enough that when I move up to 295/70/17 or 305/70/17 there won't be much more to cut. I know that i'll have to modify the pinch weld though.

First 2 photos are without the spacers. Last photo is how wide the spacers made the tires stick out. I love the look.
 

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PeoplecallmeIan said:
I have 305/65/17's. They rub a lot more than 285's.

My wheel set up is 4.75 backspacing and -12 offset. They rubbed a little before the wheel spacers. With the wheel spacers I had to get pretty aggressive with the cutting. I had to cut BMC, some fender liner, and the end caps of the rocker panel. This is with my caster set as far forward as possible. I cut enough that when I move up to 295/70/17 or 305/70/17 there won't be much more to cut. I know that i'll have to modify the pinch weld though.

First 2 photos are without the spacers. Last photo is how wide the spacers made the tires stick out. I love the look.
Click to expand...

Awesome! Thanks for adding to the discussion. What size spacers are you running? I plan to go that route, but figured there would be more rubbing.
 
NCArcher said:
Awesome! Thanks for adding to the discussion. What size spacers are you running? I plan to go that route, but figured there would be more rubbing.
Click to expand...

I have 1.25 spacers. I'm estimating with the backspace and offset, I gained about 2.75 inches of width on each side. It kinda looks like I am running the 2" long travel kit.
 
more info needed

Great thread guys, it seems everyone has had to make different adjustments with the 305/65/17 tire...sooooo I have a set that I will be getting at a very discounted price (free ninety nine), obviously I thought this would be no problem because I have a stage 2 Icon lift going on mid January, 3 up front and 2 rear for lift, I have stock 2016 SR5 rims

Bolt Pattern: 6×5.5
Wheel Size: 17×7.5″
Wheel offset: +15
Wheel backspace: 4.5″

How much chopping am I going to have to do to make these fit with no rub?

my plan B is to just get 285/70/17 and eat more cost, chopping and cutting my baby just makes me nervous

thoughts?
 
So I'm running 285/70/17's, if i switch to 305/65/17's, will the trans gearing hunt more between 4th and 5th?


I'm already pretty annoyed with the 285's and oem gearing, and that's the biggest reason I haven't gone with bigger tires, and re-gearing isn't a option at this time.

SO basically the 305/65/17 is a wide 33 inch tire?

thanks
 
Last edited:
alx_alx_69 said:
Great thread guys, it seems everyone has had to make different adjustments with the 305/65/17 tire...sooooo I have a set that I will be getting at a very discounted price (free ninety nine), obviously I thought this would be no problem because I have a stage 2 Icon lift going on mid January, 3 up front and 2 rear for lift, I have stock 2016 SR5 rims

Bolt Pattern: 6×5.5
Wheel Size: 17×7.5″
Wheel offset: +15
Wheel backspace: 4.5″

How much chopping am I going to have to do to make these fit with no rub?

my plan B is to just get 285/70/17 and eat more cost, chopping and cutting my baby just makes me nervous

thoughts?
Click to expand...

This again has been beaten to death. There is no specific be all end all for tire/wheel fitment as all 4R’s are different. Some people rub running 265s, some people don’t rub on 275s (same vehicle, same wheels, same suspension etc.). Stop being a panzy, throw those bad boys on, remove your flaps, relocate the front liner, trim as required and move on with your life.
 
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