SaturnFans.com
what's new (beta) - classifieds - forums - photos


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Tech
Register FAQ Members List Groups Calendar Chat Room Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 06-13-2010, 02:31 AM   #1
PlasticCarsRock
Master Member
PlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the rough
 
PlasticCarsRock's Avatar
 
Join Date: Dec 2005
Location: Brookline, MA
Posts: 4,303
 

1995 SL2
Default tire size: will 205/55/R16s fit? good/bad idea?

I have a '95 SL2 automatic. I am looking to replace my 205/50/R16 tires, and I know someone who has an almost new set of Goodyear Assurance Tripletread tires (~$500 new) who will sell them to me for $100. (Seems like a really good deal...) Unfortunately, they're 205/55/R16, not 205/50/R16. First of all--will they even fit without clearance issues?

Given that they do fit, is it a good idea to increase the tire size like this? How much of an impact will it have in performance?

I don't race or anything, and obviously at higher rpms it won't matter much, but my SL2 has always been really sluggish accelerating from a stop (often making it difficult to merge into moderate traffic from a stop). I'm not at all an aggressive driver, but because of where I live and drive, I often have to be able to accelerate to around 30mph, from a stop, going up a pretty steep hill, with very little gap in traffic. Will the taller gearing from these tires make much of a difference in off-the-line performance? I assume on the highway, the taller gearing would give me better mileage, assuming it's not slowing the engine down too much...?

Technical stuff: the circumference of the OE tires is 76.1", meaning 833 revs/mile (4.6" sidewall). My current tires are 75.6", meaning 838 revs/mile (4.0" sidewall). The 205/55/R16s would be 78.2" in circumference, meaning 811 revs/mile (a difference of 2.7% vs stock) with 4.4" sidewall.

Thanks for your suggestions!

...
High compression build: .033" shaved/ported head, flat-faced valves; gen3 rods, pistons, tie-plate; OE header, custom CAI, SDA street cams with adjustable sprockets, WBO2, SAFCII, LSD. ASE A1-A8+L1

REWARD EXCELLENCE!

Add to PlasticCarsRock's Reputation
Rate the quality of this post and help PlasticCarsRock reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
PlasticCarsRock is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 06-13-2010, 09:13 AM   #2
fetchitfido
Super Member
fetchitfido is a splendid one to beholdfetchitfido is a splendid one to beholdfetchitfido is a splendid one to beholdfetchitfido is a splendid one to beholdfetchitfido is a splendid one to beholdfetchitfido is a splendid one to behold
 
fetchitfido's Avatar
 
Join Date: May 2006
Posts: 10,643
 

1996 SC2
1997 SW2
Default Re: tire size: will 205/55/R16s fit? good/bad idea?

Tire Size Comparison

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
195/60-15 4.6in 12.1in 24.2in 76.1in 833 0.0%
205/50-16 4.0in 12.0in 24.1in 75.6in 838 -0.6%
205/55-16 4.4in 12.4in 24.9in 78.2in 811 2.7%
195/75-14 5.8in 12.8in 25.5in 80.2in 790 5.4%


I put studded 195/75R14s on a ~1.3" lowered '93 SL2. Long as I didn't do 70+ 'round corners in 50 (or less) zones it was fine, and it'd tap the wheel wells on the larger bumps at 40+ (rear only).

...
My collection of S-Series info: "https://drive.google.com/folderview?id=0B5D8XfJgavxrdE5mcHBlMG5rbUU&usp=sharing" (copy & paste between quotes)

REWARD EXCELLENCE!

Add to fetchitfido's Reputation
Rate the quality of this post and help fetchitfido reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
fetchitfido is offline   Reply With Quote
Old 06-13-2010, 01:49 PM   #3
PlasticCarsRock
Master Member
PlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the rough
 
PlasticCarsRock's Avatar
 
Join Date: Dec 2005
Location: Brookline, MA
Posts: 4,303
 

1995 SL2
Default Re: tire size: will 205/55/R16s fit? good/bad idea?

Quote:
Originally Posted by fetchitfido View Post
Tire Size Comparison

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
195/60-15 4.6in 12.1in 24.2in 76.1in 833 0.0%
205/50-16 4.0in 12.0in 24.1in 75.6in 838 -0.6%
205/55-16 4.4in 12.4in 24.9in 78.2in 811 2.7%
195/75-14 5.8in 12.8in 25.5in 80.2in 790 5.4%


I put studded 195/75R14s on a ~1.3" lowered '93 SL2. Long as I didn't do 70+ 'round corners in 50 (or less) zones it was fine, and it'd tap the wheel wells on the larger bumps at 40+ (rear only).
Thanks. They should definitely fit, height wise; however, they're also significantly wider than stock. I'm worried about clearance between the edge of the tire and the inner wheel well, when the tires are turned.

Also, how much of a difference in performance did the larger tires make?

...
High compression build: .033" shaved/ported head, flat-faced valves; gen3 rods, pistons, tie-plate; OE header, custom CAI, SDA street cams with adjustable sprockets, WBO2, SAFCII, LSD. ASE A1-A8+L1

REWARD EXCELLENCE!

Add to PlasticCarsRock's Reputation
Rate the quality of this post and help PlasticCarsRock reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
PlasticCarsRock is offline   Reply With Quote
Old 06-13-2010, 06:33 PM   #4
moresaturn
Member
moresaturn is on a distinguished road
 
moresaturn's Avatar
 
Join Date: Dec 2009
Location: Port Huron, MI
Posts: 173

1998 SC1
Default Re: tire size: will 205/55/R16s fit? good/bad idea?

I have 195/65R15 on my front tires and have had no rubbing whatsoever. I cant imagine another centimeter will affect it.

...
1994 SL2 - 24 Hours of Lemons Racecar
1998 SC1 - 305K miles - dead
2001 SC1 - 349K miles and counting - 1 quart per 1K miles - stock engine
Just another OEM engineer...

REWARD EXCELLENCE!

Add to moresaturn's Reputation
Rate the quality of this post and help moresaturn reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
moresaturn is offline   Reply With Quote
Old 06-13-2010, 08:22 PM   #5
eRic 02sc2
Super Member
eRic 02sc2 has a spectacular aura abouteRic 02sc2 has a spectacular aura about
 
eRic 02sc2's Avatar
 
Join Date: Feb 2000
Location: Closed Course. Professional Driver.
Posts: 14,580
 
Default Re: tire size: will 205/55/R16s fit? good/bad idea?

205/55-16 fit but you'll lose some clearance between the tire and the spring perches. also they make the car look like a monster trunk. I was running 16-inch wheels on my 96 SC2 and ordered a set of 205/50-16 tires. Well someone else's 205/55-16 tires arrived and Discount Tire mounted them on my wheels by mistake. I walked out to my car and took one look and my jaw dropped. So I had them removed and they found my 205/50-16 tires that were stacked next to were the other tires were stacked.

...
eRic 02sc2
DR SCCA Solo 2001,2002 1st DSP
WHRRi 2007,2010 Fun Run 1st
DR SCCA 2008 Triathalon 1st PF
DR SCCA Solo 2009 2nd ST
DR SCCA Solo 2010 1st ST
Crutchfield: pkeqe-6j8e3-d2qqe

REWARD EXCELLENCE!

Add to eRic 02sc2's Reputation
Rate the quality of this post and help eRic 02sc2 reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
eRic 02sc2 is offline   Reply With Quote
Old 06-15-2010, 08:32 AM   #6
HStockSolo
Member
HStockSolo is on a distinguished road
 
HStockSolo's Avatar
 
Join Date: Jul 2006
Location: Grand Rapids, MI
Posts: 422

1995 SC2
Default Re: tire size: will 205/55/R16s fit? good/bad idea?

Quote:
Originally Posted by PlasticCarsRock View Post
Thanks. They should definitely fit, height wise; however, they're also significantly wider than stock. I'm worried about clearance between the edge of the tire and the inner wheel well, when the tires are turned.
A 205 is not significantly wider than stock. What offset are the rims? 205/50R16s on +25mm offset 16x7s rubbed a little on the inner fenders/liners on the back on my Eibach lowered SW2. 225/45R16s on the same rims didn't rub at all on my SC2. Most aftermarket rims are +35 to 42mm offset, so I doubt you'll have much trouble. Even fender rubbing isn't too much of an issue--the tires will happily grind themselves clearance in the soft pastic parts.

...
1995 Saturn SC2 - ST(X)ish
1994 BMW 325i Sport
www.furrin.org

REWARD EXCELLENCE!

Add to HStockSolo's Reputation
Rate the quality of this post and help HStockSolo reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
HStockSolo is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hit a tire carcass, trying to get an idea how much repair is going cost Anubis S-Series Tech 2 04-04-2010 09:37 PM
Seafoam in oil good idea bad idea? Blind898 S-Series Tech 9 07-22-2009 12:05 AM
17" Konig Unknown, size? tire size? 92[SL2] S-Series Tech 1 05-14-2007 10:45 PM
Good turbo idea or not.. sl2clone S-Series Mods 7 02-10-2007 11:24 PM
good idea acelondon Miscellaneous Tech 0 08-03-2004 09:21 AM


All times are GMT -5. The time now is 06:48 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SaturnFans.com. The Saturn Enthusiasts Site.