The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Re: OEM is 235/50 16 - Will 245/45 16 work? [long] (archive)

[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]

Posted by Gregg on August 14, 1999 at 02:09:52:

In Reply to: Re: OEM is 235/50 16 - Will 245/45 16 work? [long] posted by Gregg on August 14, 1999 at 01:52:25:

: : As many of you that still roll on the stock
16's are aware (I have a '95 840ci with them),
235/50 WR 16 is not a standard size in the US
anymore. Is it better to go
: : with 245/45, 245/50, 225/50 or
: : 225/55 as a substitute?

: : I'm looking for maximum dry/wet summer
performance. [My tire dealer says that the 225/55s
are the way to go but I am worried about body
roll. The 235/50s
: : work fine so I'm thinking the 245/45s should
give even more performance. By the way, the
standard wheels are 7.5J x 16 and all of the above
sizes should fit
: : comfortably on that rim. I have a set of 4
snows so winter traction with these tires is not a
concern for me.]

: : Since the stock Conti Sport CZ90's make quite
a roar, I was hoping to go with the Bridgestone
Pole Position S-02s or the Yoko AVS Sports in
245/45 ZR 16
: : size.

: : Other maximum performance tire
recommendations/size advice is most welcome.
Anyone had luck with Goodyear Eagle F1 Steel or BF
Goodrich Comp TA ZRs?

: : Thanks in advance,
: : Gregg

: A different Gregg! Gregg, it's unclear if
you're talking about an E39 or your 8 series...and
you didn't leave an email link. Email me and I'll
give you some tips if dealing with E39 5 series.
If you're talking 8 series, among those you
mention, the 245-45-16 is the better route to go
vs the narrower choices, though it wil be slightly
shorter than what you have now...or better yet,
step up to 17s--such ass 235-45-17s, which are a
true Plus One to your 235-50-16s. (see for some good new and used stock BMW
wheel applications). The 235-17s are also standard
(OEM) on the 528 Sports (and '97 540 Sports) all
around, and fronts on 98+ 540 Sports. Good luck!

Followup to my previous response: stock 7.5s
are a bit narrow to run on 245 width...One reason
to consider upping to 17s, which usually gain from
1/2 to 1 inch in width in the process..7.5s
usually bump up against their "optimal" limit at
225, are "ok" for 235s, but will end up in more
sidewall "squishiness" in sidewall than you're
bargaining for...cancelling some of the benefit of
going slightly wider with 245s to begin with. IF
sticking with 16s and going 245 route, consider
aftermarket 8s (or rare 8.5s). 9s a bit wide to
run on front tho ok on rear. Also consider a
stagger of 225-55-16 front and 245-45-16 rear (an
old 70s and 80s (mostly 6 series and 5 series
"hop-ups") BMW "trick" with cars with lots of
power and light rear ends, better steering up
front, better traction in the rear....However,
some may feel the 225s may get a bit overwhelmed
with the 8s weight up front ending up in plowing
around corners./ Again check on They show the great Style 5 (BBS-made bolted crosspoke 528 Sport style, but now for other BMWs and with f/r staggers available) which they show for 8 series in 8" and 9" stagger--with 235-50-17 front and 265-40-17 rear (they) recommended. I might suggest sticking with 235-45s front and 255-40s rear per the 98+ 540 Sport's wheel/tire stagger (this tire combo more readily available for one thing, and should be still be a "true" Plus One from your stock 16s). Good luck again!

Follow Ups:

[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk. Logo © 1997 - 2018 Jump Internet Inc. All rights reserved.