275 vs. 285

[blk05v84wd]

I have a cornfed 3/2 spacer lift. I am debating whether to get the 275.70.17 (no trimming) or the 285.70.17 (trimming). My question concerns the "look" difference. I did some calculations and found that the diameter difference is .55 in between the two and the width is .39 in.

So why do people go through all the trouble of trimming when the difference is essentially negligible and does it make your truck look that much worse/smaller ect? Thanks in advance.

 

[knightsfs4]

If I were you I'd go with 275 just because the difference is so slim between the 2, but there are waaaay more options in 285 for the rim size you have. Just remember that you may still need to trim with 275s. I did.

 

[Dusty Driftwood]

Pictures of both from a profile view would be helpful to people like me that are also trying to decide between the 2...

 

[ARK_SWAMP_RIDER]

I prefer 275 for overall use. They'll be easier to fit and have better mpg. Biggest downside, and reason folks go 285's, is tire selection/price. For about the same money you can have the bigger 285's, and there are also way more tire options as stated already. A lot of people like the way the 285's fill out the fender wells with a 3/2 lift, but personally it's so close the difference is negligible to me.

 

[blk05v84wd]

If I were you I'd go with 275 just because the difference is so slim between the 2, but there are waaaay more options in 285 for the rim size you have. Just remember that you may still need to trim with 275s. I did.

From your sig it looks like you have wheel spacers and less lift (I could be wrong abt. that, but just from a quick glance). I believe most people have said there was no rubbing without the spacers and a 3/2. Am I right?

 

[knightsfs4]

I have a 3/2 as well. I do have wheel spacers, but you're going to want them as well if you don't want to rub. Here are my 275/65/18 Cooper STTs.

 

[ARK_SWAMP_RIDER]

275 *should* clear the UCA and thus not need wheel spacers to clear. Some of the more aggressive ones might rub, but most don't from what I hear. Spacers do increase the rubbing issues, I had quite a bit of rubbing when I first added mine (and zero rubbing prior).

 

[knightsfs4]

I meant rub the UCAs, sorry forgot to put that in.

 

[CAN-03runner]

Do you know if your 275 size will still fit the spare tire location? That could be a point to consider.

If the 275 still fits then you don't need to figure out what you are going to do for spares and flats.

If the 275 does not fit in the spare tire location then maybe you would consider the 285 anyway since your going to need to figure out another way to deal with the spare tire situation.

Or, another way to look at it is, if the 275 does not fit the spare tire location, you would keep the 265 in the spare tire location, and ride on the 275. If you ever need the use of the spare, the difference wouldn't as much as having to roll on 3x 285 and one spare 265.

 

[gaterose]

I think 275s fill the wheel wells very well but I'm biased :

OME 885 Front ~3"
Sway-Away 1.5" Rear (really 2" I think)
275/70R17 Goodyear AT Extreme ($600 on eBay)
Spidertraxx 1.25" Spacers

 

[zstampe]

285's
Lift in sig

 

[ARK_SWAMP_RIDER]

Basically, your answer to this is "run what I run". Read the facts, look at pics, and decide for yourself.

Most 275's should fit in the spare location. I was able to fit the 255/75/17, which is only .1" shorter than the 275/70/17. I've got room to spare, so that gives plenty of room for the .1" and variation in tire size from brand to brand.

 

[blk05v84wd]

So have we established that

(1) with a 3/2 and NO wheel spacers a 275/70/17 will not rub with zero trimming?

and

(2) with a 3/2 and wheel spacers a 275/70/17 might rub and need slight trimming (only in the front)?

 

[ARK_SWAMP_RIDER]

Without the spacers, the only thing you may need to do is move the fender liner forward. There is alsoa chance based on the tire that you will rub the uca. With spacers, you'll need to do that, trim bumper, and remove the front mud flaps.

 

[blk05v84wd]

Without the spacers, the only thing you may need to do is move the fender liner forward. There is alsoa chance based on the tire that you will rub the uca. With spacers, you'll need to do that, trim bumper, and remove the front mud flaps.

Thanks! Btw I was planning on running bf goodrich AT's on 17 inch bbs FJ wheels.

 

[ARK_SWAMP_RIDER]

BFG ATs are one of the harder tires to fit. Their square profile causes more rubbing than most. Still shouldn't be terribly bad. However, those fj wheels have a different offset than your stock wheels. This will be similar to running spacers, maybe not quite as bad though.

 

[blk05v84wd]

Went with the 275's and they look almost identical to 285's and have a lot less rubbing. Only rubbing in reverse and I think it is fixable without trimming. Thanks for the help guys.

 

[intrepidagent]

I'm planning on picking up either 265/70/17 or the stock 265/65/17 BFG's and mounting them BBS FJ rims (for a 4th gen 2008). Does anyone know if the 265/70 setup will rum while using these rims at the stock ride height?

 

[Emman]

275/70/17 With wheel spacer is going to be ok or rubbing ???