[fe7565]

First time diverting from factory tire specs. Checked and seems like from factory 225-50/17 to 235-50/17 on factory wheels is way within safety specs. And the only thing is that the tire will be a bit taller (which is actually good to fill that huge factory fender gap), but still within 2% as far as actual vs real speed indication.

Any concerns before I pull the trigger on the tires?

[Billfitz]

The main concern for me is that they'd be noisier and fuel economy would go down. The speed indication would be more accurate, as the speedometer readout is typically 5% low.

[fe7565]

Yes, you are correct on both of those counts. But it will give me some more stability in the rain and I’m thinking about putting 10mm/15mm spacers on.

[Billfitz]

Better grip in the rain comes from better contact between the tire and the road. You don't necessarily get that with a wider tire, as more surface area can result in more tendency to hydroplane. If wet grip was a concern for me I'd be looking at test results to find the best tire options. I'd think long and hard about spacers too. For every positive aspect there's a negative aspect.

[fe7565]

I see your point on hydroplaning. I am willing to go a half inch wider. Cannot be that disproportionately more dangerous as far as hydroplaning, unless the tire itself was already rated low for hydroplaning performance. I got some decent rated Pirelli P7 All Season Plus 3, 235 /50 R17, 96V, SL BSW for $95.53ea tax/shipped (after rebates).

As far as the spacers. Made for the F30, so not universal bolt pattern. Got some USA-made hubcentric 12mm front/15mm rear with 6061 T6 Billet aerospace aluminum. Extended length 10.9 Heat Treated Grade SCM435 Steel bolts. https://www.ebay.com/itm/284003210272?

[StealthF32]

Originally Posted by fe7565

First time diverting from factory tire specs. Checked and seems like from factory 225-50/17 to 235-50/17 on factory wheels is way within safety specs. And the only thing is that the tire will be a bit taller (which is actually good to fill that huge factory fender gap), but still within 2% as far as actual vs real speed indication.

Any concerns before I pull the trigger on the tires?

......checkout the below link, which should help put things into perspective - - I utilized it before I purchased my summer Arc8 setup & the beautiful thing about it...no spacers were required for the 18" aggressive setup.


https://support.apexraceparts.com/hc...-Fitment-Guide

[tturedraider]

Originally Posted by fe7565

First time diverting from factory tire specs. Checked and seems like from factory 225-50/17 to 235-50/17 on factory wheels is way within safety specs. And the only thing is that the tire will be a bit taller (which is actually good to fill that huge factory fender gap), but still within 2% as far as actual vs real speed indication.

Any concerns before I pull the trigger on the tires?

No concerns at all.