07

Project E39 M5: Yokohama Advan GT Wheels & Nitto Invo Tires

By Martin Gonzales

 

After installing the StopTech Trophy Brake System on our Project BMW E39 M5 we unfortunately, or fortunately depending on how you look at it, had to say goodbye to our stock wheel package. The OE mesh wheels were not designed to clear huge multi piston calipers and neither the front or rear wheels would clear our new brake kit. So we had no other choice but to do a long-needed upgrade to our project's wheels and tire package.  

If you've been following our M5 project, you'll recall that when we installed the front and rear Trophy kit on our M5 we weighed all the components and found our new brake system came with a 6 pound weight penalty per rear corner. This meant our new wheel and tire combo would have to meet a few requirements. Not only did we need a wheel that could clear the large StopTech calipers and help us improve on our unsprung weight gain, we also needed the wheel to be wider than stock as we were looking to increase the M5's contact patch in preparation for future horsepower mods.

Our requirements for tires would be no less demanding. Though our E39 M5 is a high performance vehicle, it is not a race car. So we wanted a tire with enough grip that it could be pushed through the canyons with confidence, but that was still civil enough to drive on a Sunday cruise comfortably.

Enter Yokohama Wheels and Nitto Tire!

 

Read the rest of our Project BMW E39 M5 series!

 

Our old wheel and tire package which consisted of OE M5 wheels wrapped with Nitto NT555 G2s will definitely be missed. We loved the NT555 G2s! They had good overall grip and were one of the quietest tires on the highway that we have ever tested. Hopefully our new wheel/tire package will help us move-on quickly.

 

To help us meet our goal of having a tire with confidence inspiring grip and daily driving comfort, we selected Nitto's Invo. The Invo is Nitto's Luxury Sport Ultra High Performance tire. It was specifically designed for plus-size staggered fitments on high-performance luxury sedans with owners who demand low road noise and comfort. Because of this, ultimate dry performance is pulled back a little in order to increase wet performance, ride comfort and overall tire life. 

 

The Invo has a much more aggressive tread pattern than Nitto's NT05 max performance summer tire, which helps it evacuate water from the zone between the tread and road for better wet grip. The Invo is engineered to have a decent ride and has by nature a softer sidewall than the reinforced sidewall and bead filled ultra high-performance Nitto NT05. The ride is designed to be noticeably better than the NT05, but by no means is the Invo a sloppy or sluggishly responding tire. The Invo is also available in larger diameter and lower profile plus fitments than the NT555 G2s we were already running on our stock E39 M5 wheels. 

 

We went to a plus size for our M5, going up to an 19 inch wheel. For tire sizes we chose a 265/30-19 for the front and a 285/30-19 for the rear. This is wider than the 245/45-18 and 275/40-18 NT555 G2 tires we were running on our M5 wheels, which were already a little wider than stock since we ran slightly taller tires when we upgraded to the G2s. Though we did not increase width by a large amount, this is probably the widest you can go on an E39 M5 without having to alter the body panels. Keep in mind that the E39 M5's rear rear fender lips come flat from the factory, so there's nothing to be gained from rolling them.

 

Page 1 of 5 Next Page
Bookmark and Share
Comments
warmmilk
warmmilklink
Wednesday, February 07, 2018 9:54 AM
looks awesome!
SM_Clay72
SM_Clay72link
Wednesday, February 07, 2018 1:19 PM
Switching from bolts to studs was the best improvement I ever made to my BMW.
warmmilk
warmmilklink
Wednesday, February 07, 2018 1:48 PM
why? other than saving you maybe 13 seconds per wheels when mounting them I don't see the advantage, just disadvantages
sobe_death
sobe_deathlink
Wednesday, February 07, 2018 2:26 PM
In the future, to avoid boring expensive wheels and making it impossible to rotate them, you can just install hubs from an E60 that have the correct center diameter.
warmmilk
warmmilklink
Wednesday, February 07, 2018 3:02 PM
your boring is my clean, your exciting is my ugly rice bs... all in the eye of the beholder
Martin Gonzales
Martin Gonzaleslink
Wednesday, February 07, 2018 3:37 PM
warmmilk: I think sobe_death meant boring as in "boring out the wheels". hehe!

sobe_death: FYI, we couldn't rotate the wheels even if we would've used E60 hubs as our wheel choice has a staggered fitment...duh ;) Good to know about the E60 hubs though. Though I must say that honestly, I would've gone ahead and bored out the wheels anyways even if I would've know about the hubs. But to each his own. Thanks for reading!



SM_Clay72
SM_Clay72link
Thursday, February 08, 2018 9:19 AM
warmmilk is hyperdefensive. Perhaps even hotmilk or hot-n'salty-milk.

It is more than 13 seconds. More like 14 or even 15 on a cold day with semi numb fingers. If you are wearing gloves we are talking upwards of 20s of pure gains. Less chance of an accidental crossthread from a misaligned bolt. It makes a difference at the track though I doubt this car will never see one even though we like to talk about unsprung weight and such on this luxury GT.
warmmilk
warmmilklink
Thursday, February 08, 2018 10:26 AM
oh, haha, my bad...
warmmilk
warmmilklink
Friday, February 09, 2018 1:04 PM
ok, actually read the article this time instead of just looking at the pics... what am I missing? there's nothing in there about boring out the wheels, just spacers to account for the smaller bore of the wheels. wheel spacers seam like a better solution than swapping hubs to me.

@SM_Clay72
still curious why switching to studs is such a good idea?
andyb5
andyb5link
Friday, February 09, 2018 9:07 PM
@warmmilk - the front wheels have spacers, but the rear wheels had to be bored out. This is noted in the caption of the 2nd photo on page 4.

I personally think studs are easier to work with in lieu of bolts. First, it's easier to remove/install the wheel, and maintenance is made easier too. I've had a rusted lug bolt snap off in the hub - that's not a fun moment. If a rusted lug nut snaps the stud, you simply remove the stud and install a new one instead of having to extract a broken bolt from your bearing hub.
warmmilk
warmmilklink
Monday, February 12, 2018 10:47 AM
I guess I missed that... I agree with sobe on that then

but being threaded in rather than pressed in from the back like oem studs are, it adds another point of failure. it doesn't seam like a solid assembly. I'd rather deal with keeping my bolts clean personally...
Post Comment Login or register to post a comment.

MotoIQ Proudly Presents Our Partners:



© 2018 MotoIQ.com