question on rear tyre size help plz!

[martymil]

Originally Posted by 135

It looks like ALLSHW has an E87 hatch so, if it's a 123d or 130i, it will have 10mm narrower hubs, which help with wheel offsets, so a 10" wide wheel with +45 offset will fit, as long as its guards are similarly shaped to a 135i.
I would still fit a wider tyre that's suited to a 10" wheel though, e.g. 265/30/19.

Very much doubt it even with 10mm narrower hubs, when under hard
compression he will rub.

maybe if it was +50 he could have a slim chance

Should post in his own thread and state what car he has, as he posted in a 135i thread.

[flinchy]

Originally Posted by 135

It looks like ALLSHW has an E87 hatch so, if it's a 123d or 130i, it will have 10mm narrower hubs, which help with wheel offsets, so a 10" wide wheel with +45 offset will fit, as long as its guards are similarly shaped to a 135i.
I would still fit a wider tyre that's suited to a 10" wheel though, e.g. 265/30/19.

E87 bumper mount gets in the way, a 9.5+45 with 245+ wide rubber = rub without fiddling with the wheel alignment specifically for it.. was hell when i put the 135 hubs on even with rolled guards lol.

E82's seem to have slightly more clearance in general to me, haven't bothered really measuring to see what and where if any though... probably should one day.

[135]

Originally Posted by Superdaws

Isn't the max 15mm larger tyre limitation on the tyre width? I.e. 255 only 10mm more than 245 standards...

The additional 15mm is with respect to the OD (overall diameter). There is a further requirement that the replacement tyre must not be more than 1.3 times the OE tyre width, e.g. 215 x 1.3 = 279.5 therefore the maximum allowable would be a 275, while 245 x 1.3 = 318.5 therefore the maximum allowable would be 315 - both easily within the maximum that is possible to fit on a 135i, even with a wide-body / 1M kit.

[135]

Originally Posted by flinchy

E87 bumper mount gets in the way, a 9.5+45 with 245+ wide rubber = rub without fiddling with the wheel alignment specifically for it.. was hell when i put the 135 hubs on even with rolled guards lol.

E82's seem to have slightly more clearance in general to me, haven't bothered really measuring to see what and where if any though... probably should one day.

I thought you had 18x9.5 +45 with 245s and they easily fit and that you probably even had room for 265s. Obviously, replacing your 130i hubs with 135i hubs is going to make fitment worse and you'd probably only just squeeze 245s in there. Why did you put 135i hubs on?

[135]

Originally Posted by martymil

Very much doubt it even with 10mm narrower hubs, when under hard
compression he will rub.

maybe if it was +50 he could have a slim chance

Should post in his own thread and state what car he has, as he posted in a 135i thread.

On a 135i: 18x9.5 +50 is a fairly common safe fitment; there are many examples of 18x9.5 +45 with 255s; there are even a few 18x9.5 +40 with 255s; 18x10 +55 (or 18x10 +45 on a 135i with 10mm narrower 130i/335i hubs) with 265s is easily possible.
So, as I mentioned, if it's on a 123d/130i and it has the same guard profile as a 135i then also easily done, especially with 265s.

Here's a 130i with 19x9.5 +45 with 255s
http://www.1addicts.com/forums/showt...5#post14409565
The tyres look stretched and would be even more so the case on 10" wheels so 265s should fit too.

And here's a 130i with 18x9.5 +35 with stretched 225s
http://www.1addicts.com/forums/showthread.php?t=1021535
So ET45 with 255s should also fit.

It all comes down to the individual car, its suspension setup, the particular tyre and guard rolling/pulling.

But the best advice for him is to measure - and then measure again. And when he's sure the measurements are right, measure again.

[flinchy]

Originally Posted by 135

I thought you had 18x9.5 +45 with 245s and they easily fit and that you probably even had room for 265s. Obviously, replacing your 130i hubs with 135i hubs is going to make fitment worse and you'd probably only just squeeze 245s in there. Why did you put 135i hubs on?

hmmm no, maybe i was talking about the front, or our E82? or a slightly different setup?

I went 135 hubs because 135 brakes, getting rotors was easier+cheaper

in hindsight, TERRIBLE idea for a number of reasons hah... one of which being fitment. Wish i could grab some higher offset wheels, would make life so much more pleasant.

our 135 has 9.5+45 with 255's, but stock height only, and really big bumps/steep driveways the tyre will still contact the (unrolled) guard.

always a best bet as above to check your individual setup though. sometimes things are very slightly different and that makes it all good.

[135]

Originally Posted by flinchy

hmmm no, maybe i was talking about the front, or our E82? or a slightly different setup?

I went 135 hubs because 135 brakes, getting rotors was easier+cheaper

in hindsight, TERRIBLE idea for a number of reasons hah... one of which being fitment. Wish i could grab some higher offset wheels, would make life so much more pleasant.

our 135 has 9.5+45 with 255's, but stock height only, and really big bumps/steep driveways the tyre will still contact the (unrolled) guard.

always a best bet as above to check your individual setup though. sometimes things are very slightly different and that makes it all good.

I was sure it was a 130i thread so... Google!

First hit... E87 Wheel Offset / fitment

You werre the first to reply...

Originally Posted by flinchy

Perfect
Vmr v701 here

I have 8.5 et45 front, with 225.. rubs a tad at full lock. Youll need i tiny bit of camber though

My rear is 9.5 et45, with 245's... bit stretch lol .. easy 10mm clearance (could fit a 265) - your 255 choice will be perfect

I think the best option would have been for you to have retained the 130i hubs and found alternate discs - or get a BBK front & rear. Actually, I'd say your best option now is still to change back to 130i hubs. Wheel/tyre fitment is more important. There's only four things that hold your car on the road/track - the four tyres. Correct offset wheels help you to achieve fitting the tyre you need.

[flinchy]

Originally Posted by 135

I was sure it was a 130i thread so... Google!

First hit... E87 Wheel Offset / fitment

You werre the first to reply...



I think the best option would have been for you to have retained the 130i hubs and found alternate discs - or get a BBK front & rear. Actually, I'd say your best option now is still to change back to 130i hubs. Wheel/tyre fitment is more important. There's only four things that hold your car on the road/track - the four tyres. Correct offset wheels help you to achieve fitting the tyre you need.

yeah that's on 130 hubs, 10mm more room there hah

nah, having the 135 hubs doesn't change anything in that regard really, just need 10mm higher offset. hence i went to 8.5+45, 2mm less poke than the previous setup on stock hubs, still wider than stock overall... 9.5+45 stock hubs has the same fitment as 9.5+55 on 135 hubs.

it's cheaper to do that, than to swap back.. buying the hubs, bearings, locking collar thing.. then the massive pain in the ass of doing the job, removing the axles etc. not cheap. and i don't plan on going through the pain again soon lol.

[135]

Originally Posted by flinchy

yeah that's on 130 hubs, 10mm more room there hah

nah, having the 135 hubs doesn't change anything in that regard really, just need 10mm lower offset. hence i went to 8.5+45, 2mm less poke than the previous setup on stock hubs, still wider than stock overall... 9.5+45 stock hubs has the same fitment as 9.5+55 on 135 hubs.

it's cheaper to do that, than to swap back.. buying the hubs, bearings, locking collar thing.. then the massive pain in the ass of doing the job, removing the axles etc. not cheap. and i don't plan on going through the pain again soon lol.

Just a correction to your reply... 135i hubs require higher offsets (not lower).

Sure, there's the cost/labour/time factor of reverting back to 130i hubs and if that's a limiting factor then you have to compromise on wheel offset and tyre width.

[flinchy]

whoops yes got confused with higher and lower and wider hah.

It's not really a compromise, just change.

the overall track width, amount of rubber that can fit, wheel widths.. all stay the same, only offset changes to keep it all identical.

[martymil]

Originally Posted by 135

On a 135i: 18x9.5 +50 is a fairly common safe fitment; there are many examples of 18x9.5 +45 with 255s; there are even a few 18x9.5 +40 with 255s; 18x10 +55 (or 18x10 +45 on a 135i with 10mm narrower 130i/335i hubs) with 265s is easily possible.
So, as I mentioned, if it's on a 123d/130i and it has the same guard profile as a 135i then also easily done, especially with 265s.

Here's a 130i with 19x9.5 +45 with 255s
http://www.1addicts.com/forums/showt...5#post14409565
The tyres look stretched and would be even more so the case on 10" wheels so 265s should fit too.

And here's a 130i with 18x9.5 +35 with stretched 225s
http://www.1addicts.com/forums/showthread.php?t=1021535
So ET45 with 255s should also fit.

It all comes down to the individual car, its suspension setup, the particular tyre and guard rolling/pulling.

But the best advice for him is to measure - and then measure again. And when he's sure the measurements are right, measure again.

If you read his post he wants to fit 10 inch wide wheels +45 there is just no way it will fit without major guard rolling and pulling and a lot on neg camber

it will still rub on the inner liner under hard compression.

[135]

Originally Posted by martymil

If you read his post he wants to fit 10 inch wide wheels +45 there is just no way it will fit without major guard rolling and pulling and a lot on neg camber

it will still rub on the inner liner under hard compression

Yes, I realise he wants to fit 10" wide wheels, which is why my original reply ALLSHW referenced 10" wheels and outlined the actual measurements and the implications of using a wheel that is wider that the Measured Rim for a particular tyre size. It's all relative - going from a 9.5" to a 10" wide wheel increases a 265 tyre's section width by 5mm total (so only 2.5mm on the outside / guard lip side).

There's a local 135i that gets tracked with 18x10 and 285/30 tyres and, to achieve that, it has a major guard roll, minor guard pull and -2.5° camber - but that's with a wide and square 285 tyre! We're only talking about a 265 on a 10" wide wheel, which would reduce the section width by at least 10mm on both the inside and outside. Based on that, I'd think that a 130i with 18x10 +45 with 265s could be done with the usual minor guard roll and, if necessary, a little more camber than stock.

There's a simple solution for the guard liner - take it out. Compromises have to be made if targeting "extreme fitment" for wheels and tyres.

And, like I said above...

Originally Posted by 135

It all comes down to the individual car, its suspension setup, the particular tyre and guard rolling/pulling.

But the best advice for him is to measure - and then measure again. And when he's sure the measurements are right, measure again.

[martymil]

You can't take the liner out without water getting into electrical and into the car. Also it's not only the liner you have to worry about its the fuel neck.

Without major guard work inside and out it will become a major headache.

The setup will never fit with stock guards period

And judging from his original question that's what he was asking

It would take a lot of effort and money for little gain and increase unsprung weight from the bigger rims which would have a negative effect on performance

There is so many cons and little pros for getting bigger rims
and it would not be worth it in the long run

Unless he tells us what he wants to achieve and how far he is willing to go
There is no way of pointing him in the right direction

[135]

Have you taken your liner out? Water doesn't get into the car and it doesn't bother the electrical, not that there is much at all in the rear. And if you take the liners out, there are other options if you're paranoid about water.
The fuel filler neck is on the inside and not an issue with 265s. Not even an issue with 285s, unless the car is absurdly lowered. I don't know why people make such a big deal about the fuel filler neck - I've never had a problem with any of the wheel/tyre and suspension combinations that I've had.

Major guard work won't be needed.
Completely stock guards and suspension - unlikely. But with a minor roll and maybe a little more camber - yes. How many cars go for an extreme fitment and remain otherwise standard? None I'd think. He knows that his wheel/tyre selection is borderline, which is why he asked, so there's a good chance that he realises some work is going to be needed.

I'm not sure there was an implication of stock setup, even though a 245 tyre was mention in his question, as that is a decent step up from the 130i OE tyre size. His question was more directed at the tyre profile than anything else.

A minor guard roll is fairly cheap and the additional camber would be part of having the suspension dialed in, which should be done anyway. It's personal opinion whether the gain is worth the cost and, if you're chasing every millimetre, I'd say the answer is Yes.
Although, I agree, increased unsprung weight is not worth it. 17" or 18" wheels would be a far better choice.

By the sounds of it, though, based on his post, he already has the 19x10 +45 wheels to suit the rear.

[martymil]

Yes I had the liners out and found out the hard way when water got into the pcd module, that's why I suggested not taking the liners out.

Also flying crap of the tyres and debris chiping away at the paint underneath, not good.

[135]

Fair enough. I've had mine out for over a year without any issues at all. As an alternative to the OE liners, there are various underbody products that protect against water, stone/rock chips and corrosion, as well as providing sound deadening.