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Thank you for all the help. I ended up going with 255/40/18 in the rear (stock is 255/35/18), and 225/45/18 in the front (stock is 225/40/18).
The larger tires drive smoother, and do not rub. The tire shop refused to increase the rear to 255/45/18 as they thought it would rub. They reluctantly agreed to put 225/45/18 in the front as they were almost certain it would rub. Attached photos for reference:
Thank you for all the help. I ended up going with 255/40/18 in the rear (stock is 255/35/18), and 225/45/18 in the front (stock is 225/40/18).
The larger tires drive smoother, and do not rub. The tire shop refused to increase the rear to 255/45/18 as they thought it would rub. They reluctantly agreed to put 225/45/18 in the front as they were almost certain it would rub. Attached photos for reference:
Stock tires:
255/40/18 rear, 225/45/18 front
Any noticeable improvements in ride quality, noise or handling?
Any noticeable improvements in ride quality, noise or handling?
The ride quality is a bit smoother. No notable noise difference. As for handling, I haven't really pushed the car enough since adding the larger tires, but assume it is not as good. But, riding over potholes and exiting parking lots with steep inclines have been much easier.
I run 255/45/18's in the rear, and 225/50/18's on the front (AWD). Tires are much taller (by-1.5-2"), but have same width for the most part. No rubbing, even with 4 adults. Car runs much smoother and quieter. Tires that are too wide can begin to look like one of the trucks with oversized tires we see on the road.
The tires fill almost the entire wheel well, and make the most sense for living in the snow and on city streets with huge potholes. Also, your speedo will be off by +3mph @ 60mph, but this is an easy head calculation when driving.
By the way, despite the huge potholes, road debris and other issues, I've yet to have any issue (>15 years) with this setup on my G35 and the IS350 AWD.
This looks great. I'm leaning toward doing this, but am also considering jennypenny's suggestion above re: 225/45/18 in the front and 245/40/18 in the rear.
I ordered the "ShrinkDoc" 255/45R18-225/50R18 setup... will let you know how that goes as soon as they are installed.
09-02-18, 10:43 PM
