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Offset confusion

Alloy wheels and tyre discussion
Jimbob456
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Offset confusion

Post by Jimbob456 » Tue Dec 19, 2017 10:56 pm

I've found some wheels I like but I'm confusing myself with the offsets now, could someone let me know if the following would fit please?

FRONT WHEELS: 225/35/19
8.5J X 19
38 (OFFSET)

REAR WHEELS: 255/30/19
9.5J X 19
40 (OFFSET)

If I'm reading correctly would I just need a 10mm spacer on the front?

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mr wilks
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Offset confusion

Post by mr wilks » Tue Dec 19, 2017 11:15 pm

What model Z4 ?
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Jimbob456
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Offset confusion

Post by Jimbob456 » Tue Dec 19, 2017 11:22 pm

Sorry, e89

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mr wilks
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Offset confusion

Post by mr wilks » Wed Dec 20, 2017 2:03 pm

Wheels will fit fine without spacers but tyre sizes are under what they could be .
On 8.5j 235 35 would be better & the rear 9.5 ideally 265 30 or 255 35
Very little rim protection on the current numbers & could feel harsh on the road
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo

jamie_z4
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Offset confusion

Post by jamie_z4 » Wed Dec 20, 2017 2:14 pm

mr wilks wrote: Wed Dec 20, 2017 2:03 pm Wheels will fit fine without spacers but tyre sizes are under what they could be .
On 8.5j 235 35 would be better & the rear 9.5 ideally 265 30 or 255 35
Very little rim protection on the current numbers & could feel harsh on the road
Standard size e89 rubber for 19s arent they Mr W?

Totally agree tho they look like rubber bands and will probably end up cracking the wheels and your fillings
18 Z4s owned to date.

Current: 2.5i Titan silver

Daily driver: 480bhp M140i Shadow edition.

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mr wilks
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Offset confusion

Post by mr wilks » Wed Dec 20, 2017 5:14 pm

jamie_z4 wrote: Wed Dec 20, 2017 2:14 pm
mr wilks wrote: Wed Dec 20, 2017 2:03 pm Wheels will fit fine without spacers but tyre sizes are under what they could be .
On 8.5j 235 35 would be better & the rear 9.5 ideally 265 30 or 255 35
Very little rim protection on the current numbers & could feel harsh on the road
Standard size e89 rubber for 19s arent they Mr W?

Totally agree tho they look like rubber bands and will probably end up cracking the wheels and your fillings
Well yes standard as in from factory but that would be with the factory 8j & 9j wheels as opposed to 8.5j & 9.5j OP has mentioned .
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo

Jimbob456
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Offset confusion

Post by Jimbob456 » Wed Dec 20, 2017 6:37 pm

Thanks for your help, appreciated

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Offset confusion

Post by Jimbob456 » Sat Jan 06, 2018 2:06 pm

Hi, could I ask your expert opinions again please? Some other wheels have come up very close to me but from reading above I think the tyres may be too large.

265/35/19 et38 9.5j
235/30/19 et33 8.5j

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mr wilks
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Offset confusion

Post by mr wilks » Sun Jan 07, 2018 12:24 pm

Jimbob456 wrote: Sat Jan 06, 2018 2:06 pm Hi, could I ask your expert opinions again please? Some other wheels have come up very close to me but from reading above I think the tyres may be too large.

265/35/19 et38 9.5j
235/30/19 et33 8.5j
Perfect widths but profiles (if correct) are opposite to what they should be ?
The 35 should be fronts & 30 rears
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo

Jimbob456
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Offset confusion

Post by Jimbob456 » Sun Jan 07, 2018 9:12 pm

Thanks again Mr Wilks.

These are the tyres on currently, I guess they'll fit then but the ride won't be great? I'd look at replacing asap

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mr wilks
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Offset confusion

Post by mr wilks » Mon Jan 08, 2018 11:10 am

Jimbob456 wrote: Sun Jan 07, 2018 9:12 pm Thanks agrain Mr Wilks.

These are the tyres on currently, I guess they'll fit then but the ride won't be great? I'd look at replacing asap
Well the ride on rear 265 35 will be good & providing you aren't lowered then they shouldn't rub . It's the fronts that need upping to 235 35 :thumbsup:
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo

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Offset confusion

Post by Jimbob456 » Sat Jan 13, 2018 12:43 pm

I'm in luck, picked them up today and turns out the fronts are 235/35/19 :D

I'm planning on fitting tomorrow so I will try and get some photos up

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mr wilks
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Offset confusion

Post by mr wilks » Sat Jan 13, 2018 12:57 pm

Jimbob456 wrote: Sat Jan 13, 2018 12:43 pm I'm in luck, picked them up today and turns out the fronts are 235/35/19 :D

I'm planning on fitting tomorrow so I will try and get some photos up
Result , get some pics up :thumbsup:
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo

Jimbob456
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Offset confusion

Post by Jimbob456 » Sun Jan 14, 2018 3:30 pm

I've got them on, now I'm thinking I may have to lower soon

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Jimbob456
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Offset confusion

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