Alternate Size Tires?

[Guru]

Has anyone tried 275/40R18 instead of 245/45R18 ?
I don’t know how wide it will be or if it is going to rub against fender liner on turning.
Please share some experience. Thanks in advance

 

[Suburbazine]

I'm running staggered 19s at 255/40ZR19 front and 285/35ZR19 rear. No rubbing.

 

[Guru]

I'm running staggered 19s at 255/40ZR19 front and 285/35ZR19 rear. No rubbing.

@Suburbazine I thought about staggered fitment initially but then want to keep original 18” wheels.

 

[Suburbazine]

I don't think the 18 inch wheels can run a 275. Probably 255 max width.

The sidewall curl may be too extreme putting a 275 on an 8 inch wide wheel. That's nearly 3 inches of overhang.

 

[glennk]

It may also throw off your alignment. 30mm is a huge change in width.

 

[Smitty15Gen]

I did this with my old infiniti g37. The 275/40r18 is technically too wide for the wheel. The minimum rim with is 18x8.5. The stock 18x8 is about 1/2 inch too small. I still did it, worst issue I noticed was some radial roll when turning fast. But the car never misshandled or felt like it was going to lose control. BUT the g37 is also a lighter car, as in weight. No change in alignment either.. lol..

 

[Guru]

@Suburbazine @glennk @Smitty15Gen
Thank you guys for sharing your experiences. I have bought the OE size tires for now. Hopefully next year I’ll get myself 2021 G80