XXR 527 or 530 17's fitment

[glowryder]

Ive been doing some searching both here and on EVOm.net, and cant seem to find 100% concrete response. I'm looking to run a XXR 527 or 530, 17x8.25. Now the offset is the question.

My setup:
2G FWD
Tein SS coil overs
Evo 8 Brembos
DSS stg 5 axles and Hubs with extended lugs.
nitto 555 245/45/17

Now , given a stock Evo 8 rim is 17x8 +35, i figured that n XXR 17.8.25 +35 would also fit, but, ive seen a few posts on evom saying that they do not. maybe because of spoke design? Some are suggesting +25. Then ive seen on DSMTuners that the +35 works, but thats on an 18" rim, and im not sure if that translates to the +35 offset works for a 17"

XXR 527's - Page 2 - evolutionm.net

I have been posting here, as an EVO seen on age 2 is running +25 so it seem at least a +25 works.

My next question is wheel bearing failure.. is there a way to avoid this?
What offset is the right choice?

The goal of these wheels is for a Daily. I will get a different rim for my NTO5r's (275/40/17) as Im a FWD. the rim i need for these tires may be a different post

 

[jtmcinder]

That's a slightly-low offset for 245s, especially if you run 245/45/17s, instead of 245/40/17s. It might force you to do more than just roll the fender lip in the rear; might need a little pull, too.

But you'll probably be fine. I'm more curious as to why you have 245/45/17s, instead of 245/40/17s. Doth thou have a boatload of powah and wish to avoid a shift?

 

[glowryder]

To be honest, id need to look at the tire.. it may be a 40 instead of a 45. As for powah.. i have a decent amount, and will be laying down more, but for that ill want drag radials and most likey need a differnt rim as the nto5r 17"rim is a 275/40.

They are 245/45. I choose that because i wanted a perfornance tire and apperntly nitto 555's dont come in a smaller size. I imagine fitting a 245/45 on a 8.25" rim wont "strech" the tire much if at all. I deff dont want the streched hella stuipid i mean flush look. But i dont want the rim/tire combo to to poke out as well, at least not an obnoxious poke.

 

[jtmcinder]

An 8.25" rim is fine for a 245. And for drag-racing, as you know, more sidewall is good. In fact, why not small brakes and 15"s or 16"s?

 

[kidtsi]

8.25 inches is 209mm rounded of, and NT555R tire if i remember right overall width is 246mm so no stretch at all, You will be fine.
Now if you are talking about the NT555 (which i hate on FWD) they are like 243mm on that size, so still no stretch, now if they are just for daily drive then they are OK.

 

[glowryder]

Its a street car that i drag occasionally. I had gsx's on it before and didnt like it, thus the move to the brembos,how ever, i didnt upgrade the BB or mbc..i plan on doing that now..it may have solved my probs.. but at anyrate swaps already almost done it . I am rocking the 555s for daily use. I tracked them last yr, amd they sucked. So im just wanting to reuse them as a street tire and get nt05r's for drag use.

So are we feeling comfortable with using a +25 offset? On a 17x8.25

 

[jtmcinder]

So are we feeling comfortable with using a +25 offset? On a 17x8.25

+25? No. I think I misread your first post. To get the rears to tuck, you want to be up nearer to +40. I thought that you were talking about +35 when I said it was a tad low.

 

[glowryder]

I think i can mix and match, Do like a +40 On the rear, as for the fronts, would i be looking at a +25 or +35 to clear the brembos? Im also contemplating maybe moving up to the 9.25 width so i can run my DR, but then again.. this whole rim stuff is new to me.

It looks like i can get 8.25 +35 for the rear and a 9.25 +25 fronts?

 

[jtmcinder]

Yes, you can go lower in the front. What I suggest is equal offsets (of around +40) with spacers in the front. There's a place that makes very nice spacers that have a centerbore of 67.1 and a lip that can be 71 or 73 or whatever you need for the wheels. This allows you to remain hub-centric and also rotate the tires. Make sense?

 

[NWHTanK]

Well im just on the looks part. Killer

 

[glowryder]

I have DSS hubs and extended lugs.. im not sure how well they will play with spacers? Can you help me understand why your suggesting all the same offset? The rims im looking at dont come in +40, only +35, and +25. I figured if i ran a 8.25 +35 in the rear, that may help tuck the wheel.

 

[kidtsi]

235s would tuck with +25, and now they wont stretch at all, as a matter of fact for a wheel that is thinner than 8.5... 235 it is.
However wheel bearing might not like it alot.

 

[kidtsi]

I would go +35 all the way around and use a 3mm to 5mm spacer on front for Brembos, unless you want the concave look +25 have (if any).

 

[glowryder]

i run 245's. I would just go +25.. but the wheel bearing issue kinda frightens me, as i plan on runnin a 275 DR..

Can some one explain why a +25 is bad on bearings?

Adding the spacer to the +35 would make it a + 32 or +30, is that correct? just trying to understand the concept. Given that, what IF i went to say, a rota P45R, thats 17x9 +30 . that seems to be a happy meduim?

 

[jtmcinder]

If, long term, you're getting 275s, then getting the rears to tuck is out, isn't it? I was still focused on keeping the rears inside the fenders. I think, at this point, I'm just adding confusion, because I'm not sure what you're trying to do. The switch from 245 to 275 changes everything.

 

[glowryder]

Its my bad i should be more clear . I plan to run the Nitto 245/45/17s all the way around. I also want to get an additional 2 rims for the front to run 275/45/17 DRs to swap out when im at the track.
I would like to dailiy the +25 in the front, as well as do the same for the DR's rims. but if its going to hurt the wheel bearing, i need another option. would that be +30?

I will always be running the 245's on the rear.

For now we can leave the 275's out They will only be ran at the track on the fronts.

 

[jtmcinder]

OK. Got it. I'm still going to argue for a higher and equal offset for the street wheels so they can be rotated. +35 is the minimum or they won't tuck in the rear. You can use a spacer in the front to lower the offset. It'll also be easier on the wheel bearings, of course.

As to the DRs, 275/45/17 is huge, you know. I don't know much about drag-racing and even less (by definition) about FWD drag-racing, but that doesn't sound right to me.

 

[jtmcinder]

Can some one explain why a +25 is bad on bearings?

I never answered this.

The wheel bearing's center is set back from the face of the hub by about 45mm. Therefore, any offset different from this value puts a twisting force through the bearings whenever you accelerate or brake. This ages the bearing much, much faster. (And they aren't very good to begin with.) As you go to offsets lower and lower, the twist in the bearing increases, following a sine curve. Thus, at first, it isn't such a big deal. But as you move farther and farther from the original offset, each additional mm causes a greater and greater increase in force.

Besides getting the tires to tuck in the rear, keeping the offset closer to +40 will extend the life of the wheel bearings.

 

[glowryder]

Ahh Thanks for the info. The rear wheel bearings are stock , and i can live with replacing those.. the front how ever are a DSS bearing that id rather not kill.. As for rotation, that makes sense, however the car is a summer driver (only on sunny days too ) so it doesn't see many miles. At this rate im thinking about going with the Rota p45r 17x 9.5+30 In the front and +35 in the rear. hopefully this will be a nice compromise on the wheel bearing/offset issue.

As for the DR, i want to use a nitto NT05R, and the smallest 17" size is a 275 :/

I also must say, i am on an avenger, and my rear sits up a little higher, so im not sure if i (with my current coil over settings) get in a spot where i can rub. Not to mention.. no back seats

 

[kidtsi]

i run 245's. I would just go +25.. but the wheel bearing issue kinda frightens me, as i plan on runnin a 275 DR..

Can some one explain why a +25 is bad on bearings?

Adding the spacer to the +35 would make it a + 32 or +30, is that correct? just trying to understand the concept. Given that, what IF i went to say, a rota P45R, thats 17x9 +30 . that seems to be a happy meduim?

Example +35 with a 3mm spacer = +32.

 

[glowryder]

It seems EVO guys are not having wheel bearing issues, is this because their offset stock is 35, vs our 4X?

 

[jtmcinder]

Yes. +38 instead of +46.

 

[glowryder]

Ok. well looks like im gunna run Rota P45Rs +30's up front and +35 in the rear Any objections i should be aware of? Minus the fact they are not all the same offset?

Side note, is the risk of killing the bearing really higher when running 25 vs 30 ?
Any risks of getting the +35 (for the fronts) and running a 5mm spacer?

 

[jtmcinder]

I am so tempted to say that the Rotas are going to bend or break long before you chew up a wheel-bearings, but the Rota jokes are getting old, so I won't.

To answer your question: it's not like there's a magic number for offset below which the wheel bearings die and above which they don't. It's all probabilistic and happens over time. I ran an offset of about +23 on an Evo X for two summers and didn't destroy anything. But I probably did five years wear in those two summers.

If you are set on these wheels, this is what I'd do. Rota P45Rs in 5x114 have a centerbore of 73, right? If so, I'd get a matched set of all +35s and then add the special spacers that I mentioned above to the fronts (only). These spacers will maintain a hub-centric connection between the hub and wheel. By running the same wheels and tires front-to-back, you'll be able to rotate the tires front-to-back, which is critical to front-heavy FWDs.

I will have a set of these special spacers in my hands by Friday, if you want to try them out. I ordered them yesterday and - as luck would have it - because I have RFP1s, I asked for a 73mm inner lip.

 

[glowryder]

Im thinking that your correct, and i should get +35 all the way. Do you have a link to the spacers? What size spacer did you get? iirc they are 73.1 mm CB

Will these be hindered by my DSS hubs and their extended Studs?
From a quick google image search, Im seeing a typical spacer, that will allow my wheel studs to continue thru and the spacer has a hub centric ring machined into it as well. im guessing this is what your referring to?