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Wheels and Tires Discussion of different brands of tires, sizes and wheels.

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Old 10-13-2008, 09:35 PM   #1
hcalvani
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Question Tire size question for Style 17 BMW wheels

Hi Guys,

For a '98 BMW 318ti, what is the widest tire that one can run on the stock (15" x 7") 5 spoke wheels? Given the 7" wide rim, in principle I could put 235/60/15 in the rear and 225/60/15 in the front. But can one expect any rubbing against the fender wells or shocks with this setup? Should I be using a different profile instead? I don't mind using rear wheel spacers.

The car has not been lowered and would only be run on the street.

Any feedback would be greatly appreciated.

Thanks,

Humberto-
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Old 10-13-2008, 09:40 PM   #2
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Hey, not sure about the tires, but if you are interested check out the mid-atlantic forum. We are having a meet next weekend. Welcome to the site!
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Old 10-13-2008, 10:27 PM   #3
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?? what are you trying to acheive though with that size tyre ??

on a 7" , you should be on a 215 50 15 // max a 225 45 15.

235 60 15 would look wrong
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Old 10-14-2008, 01:38 AM   #4
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Mallard's right, those tires would be too wide for the rim
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Old 10-14-2008, 03:42 AM   #5
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Hi tiFreak, Mallard,

Why is 235 mm too wide for a 7" rim? According to tirerack, one could put a 235/60/15 tire on rim with width in the range 6.0"-8.0". Refer to the following example for a Pirelli P600 tire:

http://www.tirerack.com/tires/Spec.j...e1=yes&place=0

I really like the light, stock rims and I just want to see if I can install wider tires...

Thanks,

Humberto-
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Old 10-14-2008, 06:59 PM   #6
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235 mm - 65% = side profile height of 141mm high.....

Fu*king ballooooons man..


also, with referance to the link provided..

your rim width may be 7" , but your cross section is 9,5"

Dont do it,
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Old 10-14-2008, 07:12 PM   #7
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Thanks, Mallard...I definitely don't want balloons!

I will stick with 225/55/15s...

Cheers,

Humberto-
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Old 10-14-2008, 07:18 PM   #8
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You can use this tire size calculator to figure how much the speedo will be off.

http://www.miata.net/garage/tirecalc.html
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Old 10-14-2008, 08:00 PM   #9
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Thanks, spidertri.
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Old 10-15-2008, 04:31 PM   #10
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Hi Guys,

One last question, the 15" stock wheels have a 47 mm offset. Can I put 5 mm spacers on the rear wheels, to better fill the fender well, with a resulting 42mm offset w/o having any rubbing problems. At what offset does the tire/wheel stick out the fender (41mm?) ?

I going to go with 225/45/15s, all around (I had a typo in the response yesterday).

Thanks again,

Humberto-
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Old 10-15-2008, 05:57 PM   #11
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there should be no problems with the size or offset with 5mm spacers ¨
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Old 10-21-2008, 03:03 AM   #12
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whats the best tire size to put on 16s and 17s? im thinking 18s are too big in LA lol id blast tires by the week with the way i drive lol
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Old 10-21-2008, 03:40 AM   #13
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Quote:
Originally Posted by 8thcivic View Post
whats the best tire size to put on 16s and 17s? im thinking 18s are too big in LA lol id blast tires by the week with the way i drive lol
I have 225/45/17...that seems to be the most common, but again, if you use Spidertri's link above, you can play around with them.

Dude, if you're going to spend money on wheels, dont get 16s, you'll be so much happier with 17s, and theres still some tire there...
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Turbos are great!...Especially the higher mileage m42's & m44's...A BUDGET setup should be good for atleast 400rwhp...I was running 60psi on stock internals and homemade parts...
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Old 10-21-2008, 05:54 AM   #14
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hmmm good point. i wonder why they made stock 15s. my civic has 16s...stock. is that 225 front and rear?
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Old 10-21-2008, 09:26 PM   #15
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Hey Guys,

At what wheel offset does the rim stick out of the fender well for a 318ti? (ET38 mm?)

Thanks,

Humberto-
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