2006 M45 aftermarket wheel/tire size

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
Stevem45
Posts: 12
Joined: Sun Feb 03, 2019 6:02 pm

2006 M45 aftermarket wheel/tire size

Postby Stevem45 » Sat Feb 09, 2019 6:51 pm

My m45 came to me with aftermarket 20” wheels. The fronts are about 9” and the rear are about 10.5”. These are measured with a tape measure through the wheel, so not exact. I deducted 1/2 inch from the tape reading to make up for the outside measurement. I don’t know what the offset is.
The front (9”) wheels have 225/35, and the rear (10.5”) have 275/35. The rear barely fit inside the wheel well, and the front 225s stretch dangerously to fit the wheel.
Is anyone else running a similar setup, and if so, what tire sizes are working for you? I’m not a real fan of two different sizes, but I really don’t want to shell out the cash for new wheels either.


Larz
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Car: 2009 M35 RWD
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Re: 2006 M45 aftermarket wheel/tire size

Postby Larz » Mon Feb 11, 2019 5:59 pm

Welcome to the forum. I believe the M45 models came with 18 x 8" or 19 x 8.5" wheels with +45 offset.
There is no way to determine if the aftermarket wheels are safe / proper until you can determine the actual offset of those particular wheels.
Sounds like the previous owner may have been more focused on appearance than a proper ride. Perhaps another member may have some input regarding over-sized wheels but I'm afraid you may need to re-do the wheels / tires.
I am running 19 x 9 " +45 offset wheels with 255/40/19 tires and I absolutely love the grip and performance. Maybe you can do just one axle at a time to avoid spending so much all at once.

Stevem45
Posts: 12
Joined: Sun Feb 03, 2019 6:02 pm

Re: 2006 M45 aftermarket wheel/tire size

Postby Stevem45 » Fri Feb 15, 2019 8:18 am

I found four 18x9 universal 114.3/120 x5 wheels for sale. Offset +35. They have Nissan sensors in them. Would this offset work, and will an 18” wheel work on the m45 Sport. Wheels made by XXR.

Stevem45
Posts: 12
Joined: Sun Feb 03, 2019 6:02 pm

Re: 2006 M45 aftermarket wheel/tire size

Postby Stevem45 » Fri Feb 22, 2019 6:07 am

I found out my wheel axe/offset. The front are 8.5” wide with 35 offset. The rear are 10” wide with 40 offset. I decided to keep this arrangement, and had new tires (255/30/20 Toyo Proxes Plus 4) installed on the front. I used a tire size calculator I found online to determine what the overall diameters would be with any given tire size. A will be putting 275/30/20 on the rear, and overall diameters will be nearly identical.
The car handles much better now, having gotten rid of the stretch fit that was up front.
My future Son-in-Law works for, and is friends with the owner of a Ford dealership, so he (I) get tires at cost, plus use of the shop after hours.
I included a couple before and after pics. You will also notice what an afternoon of Wisconsin driving can do to dirty-up a car.

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Before

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After


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