LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

245 45 18 Montepala Owners

Thread Tools
 
Search this Thread
 
Old 11-15-2009, 09:19 PM
  #1  
TECH Enthusiast
Thread Starter
 
Count of Monte Carlo's Avatar
 
Join Date: Apr 2007
Location: Hudson River Valley, NY
Posts: 697
Likes: 0
Received 0 Likes on 0 Posts

Default 245 45 18 Montepala Owners

Just wondering if anyone knew how a 245 45 18 size tire looks on the stock wheels compared to the stock 235 50 18. Thinking about getting that size. Pics are helpfull. Thank you.
Old 11-15-2009, 09:47 PM
  #2  
TECH Resident
 
someday's Avatar
 
Join Date: Apr 2003
Location: here, ny
Posts: 859
Likes: 0
Received 0 Likes on 0 Posts

Default

i would think that they'd be too wide, they should be on an 8" at least... plus they r shorter, so the speedo will read high(er)...
Old 11-15-2009, 09:56 PM
  #3  
TECH Fanatic
 
neilownz's Avatar
 
Join Date: May 2008
Location: Fargo, ND
Posts: 1,769
Likes: 0
Received 0 Likes on 0 Posts
Default

2.1% too fast. When it says 60 you'll be doing 58.7mph. Basically the same.

http://www.miata.net/garage/tirecalc.html is a pretty useful link.
Old 11-15-2009, 10:02 PM
  #4  
TECH Addict
iTrader: (5)
 
AlabamaGuy's Avatar
 
Join Date: Jun 2009
Posts: 2,802
Likes: 0
Received 0 Likes on 0 Posts
Default

I'm 245/40. https://ls1tech.com/forums/ls4-front...new-tires.html

I wish I had gotten some taller ones.
Old 11-15-2009, 11:24 PM
  #5  
TECH Enthusiast
Thread Starter
 
Count of Monte Carlo's Avatar
 
Join Date: Apr 2007
Location: Hudson River Valley, NY
Posts: 697
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by AlabamaGuy
I'm 245/40. https://ls1tech.com/forums/ls4-front...new-tires.html

I wish I had gotten some taller ones.

Hmm they dont seem to look all that much wider if at all?
Old 11-15-2009, 11:26 PM
  #6  
TECH Enthusiast
Thread Starter
 
Count of Monte Carlo's Avatar
 
Join Date: Apr 2007
Location: Hudson River Valley, NY
Posts: 697
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by someday
i would think that they'd be too wide, they should be on an 8" at least... plus they r shorter, so the speedo will read high(er)...
Well I was looking at the RS-A's and they seem to be already at the width of the wheel. I was thinking that a larger width may look alittle awkward.
Old 11-15-2009, 11:28 PM
  #7  
TECH Enthusiast
Thread Starter
 
Count of Monte Carlo's Avatar
 
Join Date: Apr 2007
Location: Hudson River Valley, NY
Posts: 697
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by neilownz
2.1% too fast. When it says 60 you'll be doing 58.7mph. Basically the same.

http://www.miata.net/garage/tirecalc.html is a pretty useful link.
Thanks, yeah I can see that...hmm...
Old 11-16-2009, 12:00 AM
  #8  
TECH Addict
iTrader: (5)
 
AlabamaGuy's Avatar
 
Join Date: Jun 2009
Posts: 2,802
Likes: 0
Received 0 Likes on 0 Posts
Default

Think 235 to 245. It's only 10mm wider. That's 1 cm. less than a half inch.
Old 11-16-2009, 07:18 PM
  #9  
TECH Addict
iTrader: (15)
 
LS1 Racing's Avatar
 
Join Date: Aug 2002
Location: 78°14′46″N 15°27′56″E
Posts: 2,419
Likes: 0
Received 5 Likes on 5 Posts

Default

I have them on my Impala SS, and they look pretty much the same. I'll try to get some pics in the next day or so. I did notice an improvment in ride, though that may have been because I ditched my half-worn RS-As for some Sumitomos.
Old 11-17-2009, 12:26 PM
  #10  
TECH Resident
iTrader: (3)
 
ImpSS07's Avatar
 
Join Date: Feb 2009
Location: Houston, Tx
Posts: 933
Likes: 0
Received 0 Likes on 0 Posts
Default

You can see a little difference in the sizes, but not much. I've got some 245/45/18 RSA's on now and they do seem to handle a little better, but not much. Also they aren't too big for our stock tires.

Here's a pic of the two when I swapped my rims out. The stock rims looks alot taller but keep in mind there's no weight on them.

Old 11-17-2009, 09:06 PM
  #11  
TECH Enthusiast
Thread Starter
 
Count of Monte Carlo's Avatar
 
Join Date: Apr 2007
Location: Hudson River Valley, NY
Posts: 697
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by ImpSS07
You can see a little difference in the sizes, but not much. I've got some 245/45/18 RSA's on now and they do seem to handle a little better, but not much. Also they aren't too big for our stock tires.

Here's a pic of the two when I swapped my rims out. The stock rims looks alot taller but keep in mind there's no weight on them.

Your 245 45 18 RS-A's would not happen to be V rated would they?
Old 11-18-2009, 11:53 AM
  #12  
TECH Resident
iTrader: (3)
 
ImpSS07's Avatar
 
Join Date: Feb 2009
Location: Houston, Tx
Posts: 933
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes they are V rated. Plan on driving faster than 150mph for and extended period of time?
Old 11-18-2009, 04:44 PM
  #13  
TECH Enthusiast
Thread Starter
 
Count of Monte Carlo's Avatar
 
Join Date: Apr 2007
Location: Hudson River Valley, NY
Posts: 697
Likes: 0
Received 0 Likes on 0 Posts

Default

Oh sure, why not...

But you think they handle a bit better?
Old 11-19-2009, 04:02 PM
  #14  
TECH Resident
iTrader: (3)
 
ImpSS07's Avatar
 
Join Date: Feb 2009
Location: Houston, Tx
Posts: 933
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Count of Monte Carlo
Oh sure, why not...

But you think they handle a bit better?
Yeah a little better. On certain highways turns here I could stay into the speed I was going while "playing" with a buddy in his vette. Before I'd have to slow down cause I could feel the car get loose.
Old 11-20-2009, 01:58 PM
  #15  
Launching!
 
radorider03's Avatar
 
Join Date: Apr 2005
Location: Springfield MO
Posts: 283
Likes: 0
Received 0 Likes on 0 Posts
Default

They are basicly the same size tires 235/50 and 245/45 are very very close in size



Quick Reply: 245 45 18 Montepala Owners



All times are GMT -5. The time now is 07:12 PM.