[bimmerZucker]

Hi all
I'm looking to buy some new alloy wheels but I can't figure out if the wheels fits my car or not.
I have a BMW 320i G21.

The wheels I'm looking at is:
TEC Speedwheels GT-7.
8.5 J, ET 25.0, 5/112
And with the tyres 225/40, both front and back.

Do they fit?

I have added a TUV report, but I'm not sure how to read it.
I don't what to add any spacers or do changes to the brake system or any bodywork.

Thanks very much!!

[larrylam646]

Originally Posted by bimmerZucker

Hi all
I'm looking to buy some new alloy wheels but I can't figure out if the wheels fits my car or not.
I have a BMW 320i G21.

The wheels I'm looking at is:
TEC Speedwheels GT-7.
8.5 J, ET 25.0, 5/112
And with the tyres 225/40, both front and back.

Do they fit?

I have added a TUV report, but I'm not sure how to read it.
I don't what to add any spacers or do changes to the brake system or any bodywork.

Thanks very much!!

Yes, the wheels will fit without spacers. Wheels will stick out 6mm more but will be fine.

Why not go with a wider tyre? Assume your G21 came with a square setup from factory and you wish to use your existing tyres.

[bimmerZucker]

Hi Larry

Thanks for your reply. It is much appreciated.

The 6mm you are talking about - is that compared to the current 17" stock OEM wheels the car came with?

In regard to tyres, the reason for 225/40 was that it were the only tyres I could choose without do any changes to brake system or body. Please see attachment from online shop.

But maybe that is wrong? What you choose instead?

Thanks

[larrylam646]

Originally Posted by bimmerZucker

Hi Larry

The 6mm you are talking about - is that compared to the current 17" stock OEM wheels the car came with?

I had assumed your factory wheel/tires were 19".... I made a mistake with my calculation... should have been 8mm... not relevant now since your G21 came with 17".

Factory 17" spec is 17x7.5 ET30 so the 19" wheels will stick out a further 18mm. FYI, I own a G20 M340iX with 19x8.5 ET25-235/40 in the front and 19x9.5 ET35-265/35 in the rear. My wheels would stick out 18mm and 20mm, front and rear, respectively relative to your factory wheels... no rubbing and the wheels/tires are still tucked behind the fender line.

Originally Posted by bimmerZucker

In regard to tyres, the reason for 225/40 was that it were the only tyres I could choose without do any changes to brake system or body. Please see attachment from online shop.

But maybe that is wrong? What you choose instead?

Thanks

I just searched ETK (RealOEM) and your EUR G21 320i can be fitted with factory 19" staggered (19x8 ET27 and 19x8.5 ET40 - 225/40 and 255/35) so I disagree with your supplier. Perhaps your supplier is being conservative since they guarantee fit. Re brake system, I have never heard of the brake system limiting the wheel/tire specs that can be fitted to a vehicle. Perhaps if you track your vehicle, the extra traction with different wheel/tire specs may cause the brake system to overheat more quickly but for DD...??

If you would like to stay square and with a 40 profile tire, 225/40 is a little stretched on an 8.5" wheel. I would recommend going a little wider, perhaps 235/40. Your tire (rim protector) will protect the rim a little better with 235/40. It may be possible to fit 245/40 but I am concerned the front may rub the wheel liner (in front of the tire), while turning the wheel lock-to-lock.

Perhaps other members that have fitted 245/40 in the front (with a similar wheel specs) can share their experiences.

Larry

[bimmerZucker]

Thanks again, Larry.

I really appreciate your insights on this matter.

I would agree with you, that the online supplier probably is very conservative (to avoid any problems in the future). But i would assume that potential a 245/35 would work. Though the TUV mention that might need changes to the body.
Maybe it has something to do with the fact that the wheels/rims are a little concave...

Also, I understand your point about of 225/40 tyres on a 8,5J wheel. It might end up looking a little strechted - though it is still safe to drive the size? Also at high speeds?

Thanks again.

[larrylam646]

Originally Posted by bimmerZucker

But i would assume that potential a 245/35 would work. Though the TUV mention that might need changes to the body.
Maybe it has something to do with the fact that the wheels/rims are a little concave...

245/35 should fit but the circumference is shorter than factory and your speedometer will read a little higher.

I did not even consider TUV approval so perhaps this is the reason. In NA, we do not have to get our mods approved by any authority.

Originally Posted by bimmerZucker

It might end up looking a little strechted - though it is still safe to drive the size? Also at high speeds?

Most tire manufacturers recommend 225/40 tires can be fitted on wheels with widths in the range of 7.5" - 9". 8.5" will be safe. Speed limit is more determined by the tire rating. Just respect the tire speed rating. Wheel load spec (of 735kg) appears to be fine but you may wish to double check with the wheel manufacturer.

Larry