Are 18s too large for a street FD? (final ratio, etc)
#1
94 FD, 69 Datsun Roadster
Thread Starter
Join Date: Oct 2002
Location: Houston, TX
Posts: 877
Likes: 0
Received 0 Likes
on
0 Posts
Are 18s too large for a street FD? (final ratio, etc)
I found a nice set of *fairly* lightweight 18" wheels for my stock suspension 94.
Here are the specs: F18x8, ET38 and R18x9, ET45
After doing a search, seems like these will fit fine. My concern is the diameter. I'd have to go with a very low profile tire to keep the stock final drive ratio. I'm thinking a 245/35/18 tire, which doesn't offer much rim protection in the event of a pothole. It also might create a teeth-jarring ride. I'd appreciate any feedback about FDs fitted with a setup like this.
TIA,
Chris
Here are the specs: F18x8, ET38 and R18x9, ET45
After doing a search, seems like these will fit fine. My concern is the diameter. I'd have to go with a very low profile tire to keep the stock final drive ratio. I'm thinking a 245/35/18 tire, which doesn't offer much rim protection in the event of a pothole. It also might create a teeth-jarring ride. I'd appreciate any feedback about FDs fitted with a setup like this.
TIA,
Chris
#3
Rotary Enthusiast
Join Date: Mar 2002
Location: Tuscaloosa, AL
Posts: 1,430
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by ptrhahn
Don't kill yourself worrying about the final drive ratio. This is WAY overblown to the point of obsession... for the street, i'd run 235/40/18 front, 265/35/18 rear on those rim widths.
Don't kill yourself worrying about the final drive ratio. This is WAY overblown to the point of obsession... for the street, i'd run 235/40/18 front, 265/35/18 rear on those rim widths.
#4
Lives on the Forum
iTrader: (9)
Originally posted by 93redFD
would he be running a taller tire for the front??
would he be running a taller tire for the front??
Not really. Both would be approximately 25.3-25.4" in diameter, depending on tire brand.
FWIW, the later-spec japanese FDs that came w/ 17" wheels used 235/45/17 front, 255/40/17 rear, which ARE taller in front, with no ill affect.
All of these are very common uprgraded wheel/tire sizes.
Trending Topics
#8
Original Gangster/Rotary!
iTrader: (213)
Nice lookin' wheels. I betcha they'll slow your rex down quite a bit though, 'specially from a dig. As much as I love my 17 inch Fikses, there is a noticeable difference between them and the stockers. I think it's partially b/c of my s03s, which I've concluded are very heavy tires.
93 R1, been meaning to ask you--who in the hell is that delectable creature in your sig? If that's your girl, you're one *very* lucky man....
93 R1, been meaning to ask you--who in the hell is that delectable creature in your sig? If that's your girl, you're one *very* lucky man....
#10
Senior Member
Join Date: Jul 2001
Location: Northern California
Posts: 595
Likes: 0
Received 0 Likes
on
0 Posts
18's Look the best hands down. Sure they may be slightly heavier, but i dont think its that big of a deal as people make it out to be.
You can go fast some of the time, but you can look good all of the time!
You can go fast some of the time, but you can look good all of the time!
#11
Lives on the Forum
iTrader: (9)
18's aren't always heavier, and the more i read, the more i hear that the tire weight is equally or more important, since it is the outermost component.
Even though i have fairly light SSR 17x9" rear (17 lbs or so), my 275/40/17 RE71 is 31 lbs!!...
i could run a 19x10" BBS (21 lbs) and a 25 lb Toyo T1S 275/30/19, and come out one pound ahead, and probably be better off, since the weight is more towards the center!
Even though i have fairly light SSR 17x9" rear (17 lbs or so), my 275/40/17 RE71 is 31 lbs!!...
i could run a 19x10" BBS (21 lbs) and a 25 lb Toyo T1S 275/30/19, and come out one pound ahead, and probably be better off, since the weight is more towards the center!
#12
Lives on the Forum
Join Date: Dec 2001
Location: San Lorenzo, California
Posts: 14,716
Likes: 0
Received 8 Likes
on
8 Posts
Originally posted by ptrhahn
and the more i read, the more i hear that the tire weight is equally or more important, since it is the outermost component.
and the more i read, the more i hear that the tire weight is equally or more important, since it is the outermost component.
I was going to get the S-03s but I have now changed my mind. Rishie, I'll be calling you to order some T1-S pretty soon -- like after the next few auto-crosses kill my tires the rest of the way.
#13
Perpetual Project
iTrader: (4)
The Continental Contact 2's are even lighter then the Toyo T1S in certain sizes, though I doubt the the Contact 2's outperform the T1S.
Chris - sweet wheels! 245/35/18 is fine on a 8in wide wheel. The approved wheel width range of both the Goodyear Eagle F1 GSD3 and Pirelli Pzero Rosso is 8"-9.5"
http://tirerack.com/tires/Spec.jsp?m...Eagle+F1+GS-D3
http://tirerack.com/tires/Spec.jsp?m...so+Asimmetrico
as is the Toyo T1S
http://toyo.com/tires/tire_specsheet.cfm?id=2
I've been wanting to try the Eagle F1 GSD3s, but they are not in the sizes I need (19"s, baby! ). I would do 245/35/18 front and 265/35/18 rear in your case. The stockish diameter of the 245/35 (24.7" diameter) will help avoid fender lip problems up front, though there are other factors to consider in fit too.
I've got a fender lip tool coming in a months time, let me know if you want to borrow it.
Daniel
Chris - sweet wheels! 245/35/18 is fine on a 8in wide wheel. The approved wheel width range of both the Goodyear Eagle F1 GSD3 and Pirelli Pzero Rosso is 8"-9.5"
http://tirerack.com/tires/Spec.jsp?m...Eagle+F1+GS-D3
http://tirerack.com/tires/Spec.jsp?m...so+Asimmetrico
as is the Toyo T1S
http://toyo.com/tires/tire_specsheet.cfm?id=2
I've been wanting to try the Eagle F1 GSD3s, but they are not in the sizes I need (19"s, baby! ). I would do 245/35/18 front and 265/35/18 rear in your case. The stockish diameter of the 245/35 (24.7" diameter) will help avoid fender lip problems up front, though there are other factors to consider in fit too.
I've got a fender lip tool coming in a months time, let me know if you want to borrow it.
Daniel
#15
Perpetual Project
iTrader: (4)
Originally posted by 93 R1
Fender lip tool?
Fender lip tool?
Fender lip gets pulled out under extreme (or even not so extreme cases) when one excutes a turn in which the suspension gets compressed and the tire tread meets the fender lip - such as turning into a steep drive going at a faster then normal rate.
I've seen it happen to stock cars with stock wheels/tire in very extreme cases, and is more common with aftermarket wheels tires. I consider it a good thing to do in either case, but it's not easy and paint can be damaged if done in too much of a hurry or not carefully.
Search under my user name and terms like 'fender lip' for more on why I think it happens.
#16
Perpetual Project
iTrader: (4)
Those links I gave does not seem to work. Try these, and click on 'Specs'
http://tirerack.com/tires/tires.jsp?...Eagle+F1+GS-D3
http://tirerack.com/tires/tires.jsp?...so+Asimmetrico
http://tirerack.com/tires/tires.jsp?...Eagle+F1+GS-D3
http://tirerack.com/tires/tires.jsp?...so+Asimmetrico
#19
Original Gangster/Rotary!
iTrader: (213)
Originally posted by 93 R1
I understand the rolled lip idea. I was just curious about the special tool you have.
I understand the rolled lip idea. I was just curious about the special tool you have.
#20
94 FD, 69 Datsun Roadster
Thread Starter
Join Date: Oct 2002
Location: Houston, TX
Posts: 877
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the feedback and compliments. They arrived and look great. This weekend I'll try a dry fitment before I order tires. I'd prefer to get Toyo T1s but don't want to spend $300 per tire. I'm leaning towards the Kumho MX. I read good things in the magazines, but not from any individuals. As suggested, I want to use 245/40/18 front and 265/35/18 in the rear.
I bought the wheels here:
http://gruppe-s.com/Advan/advanwheels.htm
I'll get a weight and more pics this weekend.
I bought the wheels here:
http://gruppe-s.com/Advan/advanwheels.htm
I'll get a weight and more pics this weekend.
#21
Rotary Freak
Join Date: Aug 2001
Location: maryland
Posts: 1,734
Likes: 0
Received 0 Likes
on
0 Posts
Rich,
Sorry bro. No idea who she is. I just linked my avatar to a thumbnail version. The pic is saved on the forum and I can't access the original address. I appreciate what you guys are doing over there though. Sorry I can't help you out. You can check out my avatar at nopistons though.
HOW MUCH WERE THE ADVANS?
Sorry bro. No idea who she is. I just linked my avatar to a thumbnail version. The pic is saved on the forum and I can't access the original address. I appreciate what you guys are doing over there though. Sorry I can't help you out. You can check out my avatar at nopistons though.
HOW MUCH WERE THE ADVANS?
#23
94 FD, 69 Datsun Roadster
Thread Starter
Join Date: Oct 2002
Location: Houston, TX
Posts: 877
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by 93 R1
HOW MUCH WERE THE ADVANS?
HOW MUCH WERE THE ADVANS?
http://www.spimotorsports.com/Catalo...__2_554633.htm
http://www.machiii.net/machiii/html/...AVS/SIENA.html
#24
Perpetual Project
iTrader: (4)
Originally posted by roadsterdoc
Thanks for the feedback and compliments. They arrived and look great. This weekend I'll try a dry fitment before I order tires. I'd prefer to get Toyo T1s but don't want to spend $300 per tire. I'm leaning towards the Kumho MX. I read good things in the magazines, but not from any individuals. As suggested, I want to use 245/40/18 front and 265/35/18 in the rear.
I bought the wheels here:
http://gruppe-s.com/Advan/advanwheels.htm
I'll get a weight and more pics this weekend.
Thanks for the feedback and compliments. They arrived and look great. This weekend I'll try a dry fitment before I order tires. I'd prefer to get Toyo T1s but don't want to spend $300 per tire. I'm leaning towards the Kumho MX. I read good things in the magazines, but not from any individuals. As suggested, I want to use 245/40/18 front and 265/35/18 in the rear.
I bought the wheels here:
http://gruppe-s.com/Advan/advanwheels.htm
I'll get a weight and more pics this weekend.
Shop around - I believe ARD T2 is a Toyo dealer and can likely get you a good deal on the T1S. FWIW, the new Goodyear Eagle F1 GSD3s are available in 245/35/18 and 265/35/18 - though no experience with them. The Goodyears (in 245/35) are $186 thru Tirerack, and the Pirellis are $225.
#25
Perpetual Project
iTrader: (4)
Originally posted by 93 R1
I understand the rolled lip idea. I was just curious about the special tool you have.
I understand the rolled lip idea. I was just curious about the special tool you have.
http://www.overboost.com/story.asp?id=131
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
SakeBomb Garage
Group Buy & Product Dev. FD RX-7
8
10-09-15 10:05 PM
rx8volks
Canadian Forum
0
09-01-15 11:02 PM