WTB: 19" Racing Dynamics RS2 wheels for my E34

[yoman1979]

Hi all !
Am looking for 19"/18" Racing Dynamics RS2 Wheels for my E34. Offset should be 15-28mm. PCD 5 x 120mm.
Personally LOVE the looks... now trying to locate them Link is here: RACING DYNAMICS 3 piece road wheel, RS2, 19 X 8.5 BMW 5/6/7/series E32, E34, E60, E63/64; front: Racing Dynamics, Inc
Wondering if anyone has contacts/ ideas to get them?

Cheers

 

[wilman2772]

Re: WTB: 19"/18" Racing Dynamics RS2 wheels for my E34

Hi all !
Am looking for 19"/18" Racing Dynamics RS2 Wheels for my E34. Offset should be 15-28mm. PCD 5 x 120mm.
Personally LOVE the looks... now trying to locate them Link is here: RACING DYNAMICS 3 piece road wheel, RS2, 19 X 8.5 BMW 5/6/7/series E32, E34, E60, E63/64; front: Racing Dynamics, Inc
Wondering if anyone has contacts/ ideas to get them?

Cheers

It's not cheap bro.....I can get RD rims, what's yor budget?


'The Great White'

 

[yoman1979]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

heya Wilman, thanks for your reply
Guess was looking for used one preferably... price.... perhaps 2.5 k max

 

[wilman2772]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

heya Wilman, thanks for your reply
Guess was looking for used one preferably... price.... perhaps 2.5 k max

Good luck in your search bro.


'The Great White'

 

[joon]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

bro 2.5k.. for 19" RD rims.. that's not realistic even for used rims.. The 3-piece RS2 retail price is USD 1350.00 each for 19 x 10.0" .. 2.5k will buy you one rim + shipping

I have seen good condition used sets for sale at around 2500 Euros.. I estimate just under 6k SGD landed in Singapore with air freight.. Used sets are rare, they do show up from time to time but you need to have the cash ready

I looked into this option for my car before, you can get better rims for the money

heya Wilman, thanks for your reply
Guess was looking for used one preferably... price.... perhaps 2.5 k max

 

[jinooi]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

there're a few sets that were advertised in bmwclubmalaysia forum. followed the lead and it led to benzworld in singapore. small world...

when i checked it out, the prices made me fall off my chair...

and i agree with joon...

but hey, one man's meat...

 

[Michelin_E36]

Re: WTB: 19"/18" Racing Dynamics RS2 wheels for my E34

Hi all !
Am looking for 19"/18" Racing Dynamics RS2 Wheels for my E34. Offset should be 15-28mm. PCD 5 x 120mm.
Personally LOVE the looks... now trying to locate them Link is here: RACING DYNAMICS 3 piece road wheel, RS2, 19 X 8.5 BMW 5/6/7/series E32, E34, E60, E63/64; front: Racing Dynamics, Inc
Wondering if anyone has contacts/ ideas to get them?

Cheers

Bro ......Joon is right I personally saw one in johor Bahru but the fella was selling it for
10k ringget.....some more with kerb rash ( bad)......:uhhh:

 

[yoman1979]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

wow... certainly super Ex !
Did see some on BMW m'sia forums as well, but that was 18". Price not too bad, just that design wasn't the prettiest.
Somehow, 5 spoke design seems to appeal to me.. no idea why. Perhaps it suits the E34 lowered body more....

Joon / jinooi / Michelin_E36, what wheels would you recommend for 19" that can fit E34 w/o fender rubbing?

Thanks guys !

 

[joon]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

for 2.5k you can't get anything.. If you increase your budget to about 7k you shld able to get something used in decent condition with 19" tyres

If performance is of any importance to you the max you shld consider is 18". You need at least 350hp to move a car like the E34 on 19", but that's my opinion only haha

wow... certainly super Ex !
Did see some on BMW m'sia forums as well, but that was 18". Price not too bad, just that design wasn't the prettiest.
Somehow, 5 spoke design seems to appeal to me.. no idea why. Perhaps it suits the E34 lowered body more....

Joon / jinooi / Michelin_E36, what wheels would you recommend for 19" that can fit E34 w/o fender rubbing?

Thanks guys !

 

[yoman1979]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

tkx fer the reply joon,
ya the 2.5k was for the rims only. Actuually, was offered 2.6k for orig. M5 19' rims (4) w/o tyres. Still considering.
Regarding performance, definitely agreed. Roughly 10 lbs more per wheel heavier for 19" M5 orig. rims ,compared to BBS RK2. Can deal w/ 5 or 6 lbs difference, but not more.
What would be a strong and lightweight choice for 18"? Could use an expert's opinion

 

[jinooi]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

price increases exponentially with lightness (well, sort of)...

value for money? try rays, prodrive, advan rs, bbs, etc... these are the more common ones. the more exotic the brand, the rarer it is, and the more expensive...

there's a thread i started with reference to the weight of most rims available in the market...

refer to http://www.bmw-sg.com/forums/bmw-singapore-motoring-life/31483-how-heavy-your-wheels.html

 

[yoman1979]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

Thanks jinooi, nice website. Shall endeavour to scour thru all the popular brands and see which suits my needs Quite a task !!! So far leaning towards some 19" ACS wheels or SSR Vienna's. Weight is only a few lbs more than my current 17" RK2's.

What wheels are all you guys currently running on, if i may ask?

 

[muwrx]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

what about 19" AVS F7?

lol

 

[yoman1979]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

nice wheels u got there muwrx.. whats the damage on those rims? Forged... gd stuff
Nice BBK !(what brand is that btw?)

 

[joon]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

If you go from 18" to 19" you'll take a performance hit no matter how light the rims are.. when you upsize you always increase the rotational mass.. a 10kg 19" rim is 'heavier' than a 10kg 18" rim simply because the bulk of the mass is concentrated on the rim itself and not the disk.. if you go from 17" to 19" the hit is even worse, but most people won't admit it coz they just spent 10k on a set of rims, standing start, 30-60, 40-80kph part throttle performance are all negatively affected

This is one of the reasons why NASCAR and many racing bodies run tiny 320mm or 315mm rotors.. instead of 355mm commonly seen on road cars.. to compensate they run much thicker rotors, so you'll see a 320 x 45mm thick rotor would weigh the same as a 355 x 32mm rotor but have less rotational inertia.. they also like to run 15" slicks is the other reason

Of course that's just part of the story.. otherwise everyone would be running 13" rims LOL.. high speed stability, cornering loads, tyre fitment, asthetics etc all play an important part.. a happy medium for pre-2000 bimmers is 17-18"

While I'm saying this.. I should add that turbo/boosted cars seem to shrug off the additional rotational mass better than NA cars.. this is a subjective observation not backed by any technical data

The engineer's rule of rim sizing is: determine the brake torque to stop the car under Vmax conditions, use the largest rotor for the given brake torque and caliper piston size, then find the smallest rims that will fit over that brake combination

Of course 99% of the people (including me haha) will ignore this and just buy rims that look good, and that's perfectly fine, just make sure we are aware of how it affects performance

 

[Michelin_E36]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

If you go from 18" to 19" you'll take a performance hit no matter how light the rims are.. when you upsize you always increase the rotational mass.. a 10kg 19" rim is 'heavier' than a 10kg 18" rim simply because the bulk of the mass is concentrated on the rim itself and not the disk.. if you go from 17" to 19" the hit is even worse, but most people won't admit it coz they just spent 10k on a set of rims, standing start, 30-60, 40-80kph part throttle performance are all negatively affected

This is one of the reasons why NASCAR and many racing bodies run tiny 320mm or 315mm rotors.. instead of 355mm commonly seen on road cars.. to compensate they run much thicker rotors, so you'll see a 320 x 45mm thick rotor would weigh the same as a 355 x 32mm rotor but have less rotational inertia.. they also like to run 15" slicks is the other reason

Of course that's just part of the story.. otherwise everyone would be running 13" rims LOL.. high speed stability, cornering loads, tyre fitment, asthetics etc all play an important part.. a happy medium for pre-2000 bimmers is 17-18"

While I'm saying this.. I should add that turbo/boosted cars seem to shrug off the additional rotational mass better than NA cars.. this is a subjective observation not backed by any technical data

The engineer's rule of rim sizing is: determine the brake torque to stop the car under Vmax conditions, use the largest rotor for the given brake torque and caliper piston size, then find the smallest rims that will fit over that brake combination

Of course 99% of the people (including me haha) will ignore this and just buy rims that look good, and that's perfectly fine, just make sure we are aware of how it affects performance

Wah lau.....joon bro u too technical for me man.....but i agree with what you have just said ,,,,about the nascars....spot on bro!!!
Anyway "Yoman " ....the E34s should look good with rims that run according to their YOM.....Rims like the harmanns, AC type3s, Racing dynamics
two piece sets and the pre 1994 M5 types..My 5 cents worth of opinion!!

 

[yoman1979]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

Tkx Joon, for the detailed response
Some guys on the net have also said the same. Here are some cons of upgrading to larger wheels according to them
: cost
* tires are very expensive (true for 19")
* rough ride
* worse fuel economy due to increase rotational inertia.
* increased braking distance due to increase rotational inertia.
* slower acceleration due to increase rotational inertia.
* increased brake wear / reduced brake life due to increase rotational inertia.
* less responsive handling due to increase rotational inertia.

Joon, just to check: If the moment of inertia is proportional to mr^2, then if both 17" and 18" rims weights are the same, MOI would be more for 18" (by a factor of Rdiff^2) right? (where the R=radius from centre of mass) So if can find a 17" wheel that is a few lbs lighter than the 18", theoretically should be able to balance out the rotational inertia...?

Anyways, still considering upgrade to 18" for the look!, while keeping stock brake discs(maybe increase thickness of brake discs, not diameter)..

 

[jinooi]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

one of the reasons why i didn't change to the RS2 was because they weigh about 13kg each for 18". just so you know...

 

[marklee]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

imho, the most value for money lightweight rim would be the OZ ultraleggeras....however dont think it will look good on a E34

 

[joon]

Re: WTB: 19" Racing Dynamics RS2 wheels for my E34

Sort of correct, the calculation is slightly more complicated, because you need to factor in the weight of the tyres as well.. the actual calculation is a matrix equation.. but that's abit OTT even for me haha

Just know that 17" -> 18" = decrease performance, UNLESS:
1. Your 18" rim+tyre combination is very much lighter.. like 30-40%.. which is unrealistic
2. You have too much power and are having traction problems so you're upgrading to run bigger tyres, in this case your car will actually be faster with the bigger tyres/rims

Having said all that.. don't think too much, just get a set of rims that makes you happy, that's the most important factor

Joon, just to check: If the moment of inertia is proportional to mr^2, then if both 17" and 18" rims weights are the same, MOI would be more for 18" (by a factor of Rdiff^2) right? (where the R=radius from centre of mass) So if can find a 17" wheel that is a few lbs lighter than the 18", theoretically should be able to balance out the rotational inertia...?

Anyways, still considering upgrade to 18" for the look!, while keeping stock brake discs(maybe increase thickness of brake discs, not diameter)..