Quick question. Looking at replacing my stock 17" G37 sedan wheels with some 18's or 19's. Also looking to lower the car to give it a more sporty look and feel. My concern is I drive ALOT. Roughly 700-1000 per week and I obviously can't afford to sacrifice to much comfort for the look in going for.

1) what size wheels do you recommend?

2) how low should I go?

Thanks in advance!

 

Welcome to the site!
I'd recommend Tein Basis coilovers, these are a mild drop coilover and you can set the exact height you want. For a heavy mile daily driver I'd drop about 1.25 to 1.5", you can drop up to 2" if your roads are better than average.
18" wheels will give the best comfort for all that driving so that's what I'd do.
The Tein coils are about $600 and a rear camber 4 bolt kit is $50 if you DIY.
What's your budget for wheels? Decent Enkei & TSW wheels can be found in the $250 range, Work & SSR flow formed sets are in the $400 range.

 

As much as you drive, I wouldn't suggest lowering it at all. It will degrade your ride comfort to some degree no matter how you drop it. Driving as much as you do you might regret making the ride less comfortable.

My experience is that Swift springs are a moderate drop and sacrifices less comfort than most coilovers. The larger wheels you get, the lower profile tires you'll have. That will also take away ride comfort.

 

Looking at placing OEM Coupe Sport wheels to keep it clean. The existing wheels scream "Sedan" I'm struggling finding a set that are not staggerd as I need to rotate tires regularly. May be a dumb follow up question but if I place larger wheels on, would it not look as though the car has been lowered somewhat? #RealNewbie

 

Black Betty has good advice for someone that drives that much. 1k miles/week will be rough on any suspension, oem dampers on firmer lowering springs will make it that much rougher as the dampers start to degrade.

If you go with larger diameter wheels the sidewalls will shorten to retain similar rolling diameter. When you go up in wheel diameter it makes the gap "appear" to become larger to the fender.

The reason I suggested the Teins is they have a softer spring rate vs. most coilovers and teh reviews that are in have stated the ride is similar to OEM. Keep in mind all lowering springs and coilovers will be firmer than your current OEM setup, there's no magic pill there

I'd stick to 18s for comfort, and if you decide to lower your G keep it mild.

 

I have swift springs on mine and it Rides very good. very close to oem.

like brad said those tein coilovers are nice too.

 

Having a hard time finding sport wheels in the 18" size. What tire would you recommend if I end up going with the 19's.