Member
Ride height aside I’m looking for answers on what offset I would need to get to run 10in wide in the rear with 255-265/35/19s with a roll
Member
You would need fender flares. Even with bolt on ones like Hard, you need to cut off the arches and weld the underlying sheet metal. Or you can jack your car up like an old school American hot rod and ruin the handling.
Stubborn Approach Racing
-10 camber or something stupid like that
Member
19x10's?! Jesus Christ man... I mean it's your car. Honestly you're going to be cutting metal and making extensive modifications to the rear geometry to get those to sit right. Even 18's(In my mind) are too large for an e36
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Balogne Cajones
Won't be that bad. I think its like a 2" roll. Its right at the limit of the stretch for the fender metal. However, you will have a issue where the bumpers meet the fenders. It might not be so bad at stock height, but you will rub.
Nobody would recertify these machines after somebody screwed with them without any visibility into what they did.
HONK! HONK! Clown car coming through!
-Oakdizzle
Member
i have 245 in the back and an offset of 42 or something like that (stock) and i can't find a reason why a 10mm wider tire wouldn't have enough space. i have more than 5mm of free room per side. and if you now watch out that your 19 inch rim with tire diameter is the same as the stock 17 inch wheel then it fits. but there's no tire that flat. so it doesn't really work. besides that it looks bad.
Member
OP are you making 1000hp at the wheel? Bigger and wider is not always better. There are optimal sizes for NA and FI e36s.
Member
LOL I was simply looking for offset numbers theres plenty of people running 17 or 18x 9.5 or 10 square, that being said I'm gonna pull it off regardless if you guys give me shit info and i really have to measure it out myself or if someone gives me a better offset to use. +20 to +50 is my option. Like I'm running 19x8.5 in the front slammed and I'm raising up and actually using normal non stretch tire sizes now.
Member
Stock offset is ET41 and stock rear 96-99 M3 wheels are 17x8.5 with 245/40/17. I run 17x9 ET41 with 275/40/17 and they don’t fit very well. I had to pull very heavily on the outer and pound a little on the inner and use stock ride height. As you go up into the fender well, there is less and less space so a big wheel and tire combination like you want — 255/35/19 or 265/35/19 on a 10 inch wide wheel will be a challenge. You might get it to fit by running more negative camber so it tilts in at the top. You may or may not need to reduce offset from the stock ET41, and there really isn’t much extra room on either side at that width and that far up in there. I’d probably try around ET40.
Flares are the smart way to go for what you want. Even if you get your proposed size to fit, it will probably rub at times.
Stretching a small tire helps keep width increase down but it also rides hard and wears poorly.
I have a set of Hard flares that I will be running. They are not a quick install — you have to weld up the sheet metal after you cut off the stock arches.
I don’t think 19s are a good choice for the E36. 17s and 18s work better.
Member
I might end up doing overfenders in the future so I prob shouldnt be concerned but for this year I want to stay at stock fenders with some pulling and rolling, as they are already mildly rolled.
This is it on 19x8.5s 225/35/19 mild stretch which i didn't want but bought wrong size tires and this is pretty dumped, my rears are all the way down and my fronts are about half way on fortune auto 500 series coils. SO i figure i raise the car up 2-3 inches back to stockish ride height and fit a bigger tire combo
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Last edited by smaccc; 01-24-2018 at 01:58 PM.
Member
19x8.5 with 225/35 is much less of an issue than 19x10 with 255 or 265/35. Let us know how it goes.
Member
You should give Apex a call - they're extremely knowledgeable and also very happy to help.
I will note that all of Apex's 10" wheels for BMW are et 25. Specifically, the 19's are 19x10 et25.
In the rear, this should just clear the shock without spacers.
BMW Style 68 wheels are 17x8.5 et 50 and fit in the rear of an E36, and the 19x10 et25 is 1" further outboard (25mm = 1 inch, so et 25 vs et 50 is 1" further outboard) and is 1.5" wider, or 3/4" wider inside and 3/4" wider outside. So it should have 1/4" MORE clearance inside.
So you should be fine on the inside. You may be able to use a 10" et 30, but there's really not much room left on the inside. And a spacer is out - you're already in trouble on the outside.
And you'll have a terrible time getting that all under a fender. I have 17x9 et 30 square, and have a stock size (245/40) tire. I rolled and pulled like crazy to get that to fit, and still get rubbing when I have the car loaded and compress the rear.
I don't think I could fit a 255, much less a 265 without rubbing like mad, or maybe even just having full, constant contact between tire and fender. And I've already pulled and prodded just about as much as I dare.
You will need to lose another 10mm of offset and then also try to fit a tire 10-20mm wider. And on top of the extra width and pushing the tire outboard more, the tire you want (265/35/19) is 40mm (1.6") taller than the stock wheel.
That's a pretty tall order - I'd have the overfenders in hand when you do this. This would be easy if you weren't trying to fit it inside the factory arches.
One last thing - you want to put a 265 on a 10" wheel that could fit a 305. Why? Why not use a 9" or 9.5" wheel (that would fit a 275 or even a 285) instead?
-Josh: 1998 S54 E36 M3/4/6 with most of the easy stuff and most of the hard stuff. At least twice. 271k miles. 1994 E32 740il with nothing but some MPars. 93k miles.
Stubborn Approach Racing
265mm is wider than 10", it may not be his reason why, but is the reason for anyone who knows better. Wider rubber does not equal more grip...Originally Posted by blckstrm
Member
My reason is that the wheels I have are only offered in 8.5 and 10” for my car and it’s the cheaper route instead of buying new wheels, I’ve seen a 265/30/19 fit with a et38 so I was considering et40 not sure might have to measure a little bit more tho
Member
I don't think that's how this all works.
Nobody runs a 225 on a 9" wheel because 9" = 229mm. A 9" wheel is just a bit too wide for a 245, much less a 225. In fact, most calculators I'm seeing list a 10" wheel as the largest possible for a 255 (despite 255mm also being wider than 10").
As I said - that's not how this works. A 285 is the correct width for a 10" wheel.
-Josh: 1998 S54 E36 M3/4/6 with most of the easy stuff and most of the hard stuff. At least twice. 271k miles. 1994 E32 740il with nothing but some MPars. 93k miles.
Member
It seems like you're leaving something out. You already have 10" wheels you're trying to fit? Or you're trying to go wider with the same style and don't want to buy a different wheel?
You can fit a 255 to an 8.5" wheel. You might even be able to get a 265 to fit on your current wheels.
A10" wheel, the required offset, and additional diameter all create a lot work that rarely ends with the factory fenders still attached to the car.
-Josh: 1998 S54 E36 M3/4/6 with most of the easy stuff and most of the hard stuff. At least twice. 271k miles. 1994 E32 740il with nothing but some MPars. 93k miles.
Stubborn Approach Racing
You have got to be kidding me. Ill take it even further as I know multi season champions running 205s on 9" wheels, because it is much faster to have a taut sidewall instead of a rubber noodle for a sidewall. As a matter of fact, I was running 225s on 9's in 2010.. I run 245 on 9.5" now... a 255 or 265 would be heavier, sloppier, and have less lateral grip if compounds remains the same. So yeah, people do run those sizes you said "nobody" runs, and they have been doing it for years. I have been doing it for years. And any time any of my DE students ask, I tell them the same thing, more rubber does not mean more grip.
Member
I get where you're coming from - but I don't think this guy is building a race car.
-Josh: 1998 S54 E36 M3/4/6 with most of the easy stuff and most of the hard stuff. At least twice. 271k miles. 1994 E32 740il with nothing but some MPars. 93k miles.
Stubborn Approach Racing
Your objection to my comment forced the conversation that direction. We all know he's not going to track the car, but a 265 is perfectly fine on a x10" wheel, as it is likely wider than the wheel depending on if it is J or JJ measurements.
Member
Who says i wont track the car? Not on the 10s in the back but i might with my 19x8.5 squared setup
Member
I didn't say you won't track it occasionally - I said you're not building a race car. And to Neverlift's point - You definitely won't be tracking it with 10" wheels you can barely fit under the fenders. You'd use the 8.5s for that.
But the point remains - especially since you WON'T be tracking it with the 10s. You'll have FAR less trouble fitting a 265 on your current wheel than on a 10" wheel.
-Josh: 1998 S54 E36 M3/4/6 with most of the easy stuff and most of the hard stuff. At least twice. 271k miles. 1994 E32 740il with nothing but some MPars. 93k miles.
Member
Might.
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