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Will my BMW Alloys Fit on the 370Z with a adapter?

Hey all, I am slightly stuck with the following and would appreciate some advice I want to use some alloys I bought for my previous car on the 370Z but

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Old 02-12-2018, 04:30 PM   #1 (permalink)
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Default Will my BMW Alloys Fit on the 370Z with a adapter?

Hey all,

I am slightly stuck with the following and would appreciate some advice

I want to use some alloys I bought for my previous car on the 370Z but they are 5 X 120 PCD.
How ever I can see that H&R do PCD adapters for 5x120 to 5x114.3 Are PCD adaptors such as this okay to use?. My next question really is will the wheels be a good fit along with the tyres?

I am concerned they would be to far out of the arches rather than sitting flush.

Tyres
Michelin PS4S 265/35/19 - Rears (Would the profile of the tyres be a issue?)
Michelin PS4S 235/30/19 - Fronts

Alloys
Front 8.5 x 19 et 35
Rear: 10 x 19 et 40

H&R 20mm 120 to 114.3 PCD Converter front and rear (so i guess this would act like a 20mm spacer)

What would you guys reccomend? I have an option to sell these tyres and alloys, but means I would probably end up buying a new set for the 370Z, although If i were to do that I would probably end up looking at 20" alloys instead of 19s

Thank You
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Old 02-12-2018, 04:34 PM   #2 (permalink)
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Best practice is to buy wheels that actually fit your car. Personally, I would never use hub adapters on a sports car because I like to drive it as such. But the adapter is at much less risk of failing if you drive 5 mph through the parking lot on the weekends.
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Old 02-12-2018, 04:41 PM   #3 (permalink)
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Quote:
Originally Posted by JARblue View Post
Best practice is to buy wheels that actually fit your car. Personally, I would never use hub adapters on a sports car because I like to drive it as such. But the adapter is at much less risk of failing if you drive 5 mph through the parking lot on the weekends.
The Hub Adapters for PCD fitments are from reputable companys such as H&R.
I have used hub centric spacers on my sports cars in the past which presented no problems, just not to sure about the pcd adapters.
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Old 02-13-2018, 04:12 AM   #4 (permalink)
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Dude

Your fronts are ~625mm in diameter and rears are ~670mm in diameter

There is no way the Nissan electronic nannies will tolerate that.

In addition, with an effective offset at the front of ET20, your tyres will slightly poke outside the bodywork based on my calcs (by maybe 3-5 mm

For the rear, it should be close to OK

That said, the killer is tyres diameter differences and that is a show-stopper
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Old 02-13-2018, 06:17 AM   #5 (permalink)
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Originally Posted by BGTV8 View Post
Dude

Your fronts are ~625mm in diameter and rears are ~670mm in diameter

There is no way the Nissan electronic nannies will tolerate that.

In addition, with an effective offset at the front of ET20, your tyres will slightly poke outside the bodywork based on my calcs (by maybe 3-5 mm

For the rear, it should be close to OK

That said, the killer is tyres diameter differences and that is a show-stopper
Hi, thanks for the help.

To be clear is the problem here that the fronts height is 35 and the rear tyres are 30? Thus knocking the diameter values? And to be clear short of changing the tyres there is nothing that Can be done here?

Thank you
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Old 02-14-2018, 05:35 AM   #6 (permalink)
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I would definitely just choose wheels that actually fine your vehicle. I wouldn’t take the chance on putting hub adapters on our cars it’s a risk.
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Old 02-14-2018, 06:14 AM   #7 (permalink)
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Depending on your ride height & camber adjustments; you have 15-20mm room to play with up front (adapter thickness) on the rears 25-30mm thickness.
Tire diameter differential is a no go (as previous mentioned)
Just be safe & use quality parts & the correct torque if you choose to go this route.
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Old 02-14-2018, 04:07 PM   #8 (permalink)
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dont know why you're trying to hard to fit wheels with crap sizing

sell them and get wheels that fit

hell some OEM Nismo wheels have better sizing
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Old 02-18-2018, 05:45 PM   #9 (permalink)
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Thanks for all the help guys. I have now sold my BMW Alloys / Tires and will look at some new ones for the 370Z at some point.

Thanks
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Old 02-18-2018, 06:01 PM   #10 (permalink)
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Quote:
Originally Posted by JARblue View Post
Best practice is to buy wheels that actually fit your car. Personally, I would never use hub adapters on a sports car because I like to drive it as such. But the adapter is at much less risk of failing if you drive 5 mph through the parking lot on the weekends.
I fully agree with you on the first half!

However, I drove on 20/25mm spacers on my 350z for about 2 years straight. Never had any issues with alignment or safety. Now, I never did track the car, I would not add spacers to a track car.
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Old 02-18-2018, 06:13 PM   #11 (permalink)
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I agree it is probably overly cautious to worry about new spacers or hub adapters manufactured by a reputable company (e.g. H&R) and installed correctly on a street driven vehicle.
Then again, there are some who would argue there is no such thing as overly cautious.

Proper fitment is always better than adapting ill-fitting wheels. Looks like OP is doing the right thing
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