Cadillac Owners Forum banner

1 - 18 of 18 Posts

·
Registered
1995 SEDAN DEVILLE-4.9 & 1978 SEDAN DEVILLE-425
Joined
·
1,673 Posts
Discussion Starter #1
Hi,
Stock tire size on my '95 Deville is 215/70R/15, which I have on it now and I need some new tires.
Could I run 225/70R/15`s on it or not?
If I could, would they fit in wheel wells ok without rubbing on anything?
Thanks for any help.
 

·
Registered
2001 Seville STS, 1990 Seville (RIP), 1972 Sedan Deville
Joined
·
26,323 Posts
They won't rub, but that doesn't mean the speedometer and odometer won't read incorrectly.

A 225/65/15 might be closer to the correct circumference. Get on www.tirerack.com , type in all 3 tire sizes, choose one brand/model, and click on specs. You'll be able to see which is closest to OE.
 

·
Registered
1995 SEDAN DEVILLE-4.9 & 1978 SEDAN DEVILLE-425
Joined
·
1,673 Posts
Discussion Starter #3
I`m hoping the speedo/odo difference would be very minimal with the 225/70/15.
I run 225/70/15`s on my '78 Deville and they do great.I just like the little added girth and somewhat more cushioning ride on the 225`s.
My main concern is the 225`s hopefully "not" rubbing in the wheel wells while turning on my '95 Deville.
According to MoistCabbage`s great info, they won`t rub.
 

·
Registered
70 Deville 77 Fleet 78 Seville 92 Deville 03 Deville
Joined
·
3,310 Posts
I thought those cars came with 205's. If so 215's would be one upsize and 225's may be pushing it. How much room do you have between the current tire and the struts?
 

·
Registered
2001 Seville STS, 1990 Seville (RIP), 1972 Sedan Deville
Joined
·
26,323 Posts
Even if OE size is 205, a 225 will only add 10mm per side. It's not much difference, the clearance isn't THAT tight with the OE tires.
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,270 Posts
Even if OE size is 205, a 225 will only add 10mm per side. It's not much difference, the clearance isn't THAT tight with the OE tires.
--------------------------------
original size was 205/70/15 - going to a 225/70/15

the new tire is .8" wider - and a full inch taller -

when the speedo displays 60 - the actual speed will be 62.5 -
 

·
Registered
1995 SEDAN DEVILLE-4.9 & 1978 SEDAN DEVILLE-425
Joined
·
1,673 Posts
Discussion Starter #7
--------------------------------
original size was 205/70/15 - going to a 225/70/15

the new tire is .8" wider - and a full inch taller -

when the speedo displays 60 - the actual speed will be 62.5 -
Wow--I never knew original size was 205.Every online tire site I`ve checked states OEM tire size for my '95 Deville is 215/70/15.
If they fit in their ok--I`d prefer the 225`s.

----------

I thought those cars came with 205's. If so 215's would be one upsize and 225's may be pushing it. How much room do you have between the current tire and the struts?
Seems to be enough room between current 215`s and the struts for 225`s.
 

·
Registered
1991 Cadillac Brougham D'Elegance 5.7 Litre, 1994 DeVille
Joined
·
6,796 Posts
Original size was 215/70. Going to 225/70 won't make much of a difference but there's no reason to change sizes.
 

·
Registered
1995 SEDAN DEVILLE-4.9 & 1978 SEDAN DEVILLE-425
Joined
·
1,673 Posts
Discussion Starter #9
Original size was 215/70. Going to 225/70 won't make much of a difference but there's no reason to change sizes.
I`ll make my decision on 215 or 225 depending on what`s available locally and if they carry either 1/2" or 3/4" "whitewalls".
Whitewalls are hard to find these days--especially the 3/4" whites--which I really want!
 

·
Registered
1995 SEDAN DEVILLE-4.9 & 1978 SEDAN DEVILLE-425
Joined
·
1,673 Posts
Discussion Starter #11
I thought those cars came with 205's. If so 215's would be one upsize and 225's may be pushing it. How much room do you have between the current tire and the struts?
By just eyeing it there seemed to be enough room for 225`s.
Just to be sure I went out and did some actual measurements today with a tape measure. The 225's are 1" taller than the 215`s and that extra inch would make contact with the front strut assembly for sure.
I`ve got 215`s on my '95 and there is very little space between the top of the tire and the strut assembly.
So good thing I checked before hunting for 225`s.
I`ll be looking for new 215`s with 3/4" white walls.
 

·
Registered
2001 Seville STS, 1990 Seville (RIP), 1972 Sedan Deville
Joined
·
26,323 Posts
225 is the WIDTH (in mm) of the tire. The second number is the aspect ratio. For simplicity's sake, a 200/50/15 would be 100mm wide, have a 100mm tall sidewall, and fit a 15" rim.

A 225 is NOT automatically taller than a 215. A 225/60 IS slightly taller than a 215/60. NOT by an inch though. A 215/60 and 225/55 might be almost exactly the same height. These are just examples.

You CAN fit a 225 as long as the aspect ratio is correct. The OD of the tire has to be within 1/4" of that of the OE tire.
 

·
Registered
1991 Cadillac Sedan deVille
Joined
·
530 Posts
My '91 deVille has 215's on it (Michelin Rain force), but it is supposed to have 205's on it. The PO (old lady) for some reason had 215's put on it. I do not know if this would throw the speedo off or not?

You can see in my wheel wells on the front where they have rubbed a bit in the wheel wells on sharp turns.
 

·
Registered
1995 SEDAN DEVILLE-4.9 & 1978 SEDAN DEVILLE-425
Joined
·
1,673 Posts
Discussion Starter #15
Went to my local Belle Tire and got 4 new Michelin 215/70r/15`s with 3/4" white walls for a fair price yesterday.Got them to take $60 off estimate since I brought in proof a lower price on an online site.
I get lifetime balancing,flat repairs,rotations and some other goodies.
Went to 2 other tire places to compare prices,but since Belle had them right there on site in stock and I was the only customer in there, I was in and out of there within 45 minutes with brand new treads!
Those 3/4" whites look fantastic!

Thanks for all the great info to those who chimed in--I learned a lot about tire sizes.
 

·
Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,270 Posts
225 is the WIDTH (in mm) of the tire. The second number is the aspect ratio. For simplicity's sake, a 200/50/15 would be 100mm wide, have a 100mm tall sidewall, and fit a 15" rim.

A 225 is NOT automatically taller than a 215. A 225/60 IS slightly taller than a 215/60. NOT by an inch though. A 215/60 and 225/55 might be almost exactly the same height. These are just examples.

You CAN fit a 225 as long as the aspect ratio is correct. The OD of the tire has to be within 1/4" of that of the OE tire.
=========================
For simplicity's sake,
a 200/50/15 would be 100mm wide, :thepan:
have a 100mm tall sidewall,
and fit a 15" rim.

a 200/50/15 would have a SECTION WIDTH -
the fattest part of the tire - 200mm wide -
100mm tall sidewall -
and fit a 15" rim -
==========================

A 225 is NOT automatically taller than a 215.

yes - it is - assuming the same ASPECT RATIO - and wheel size -
a 225/60/16 would be 10mm wider section width than a 215/60/16 -
and about 6mm taller SIDEWALL - 60% as tall as the section width -
resulting in almost 1/2 inch difference in DIAMETER -
26.63" compared to 26.16" -

---------------



----------

215/65/r15s wont throw off the speedo. 215/70/r15s will read about 2-3 mph more at 60 mph.
---------------------------------
215/70/r15s will read about 2-3 mph more at 60 mph
actually - it will read LESS than the actual speed -

the 205/70/15 has a diameter of 26.3" -
the 215/70/15 has a diameter of 26.85" -
slightly more than 1/2" difference -

when displaying 60mph -
the 215/70/15 actual speed will be 61.26 -

or

when actual speed is 60mph -
it would display 58.77 -

----------

Went to my local Belle Tire and got 4 new Michelin 215/70r/15`s with 3/4" white walls for a fair price yesterday.Got them to take $60 off estimate since I brought in proof a lower price on an online site.
I get lifetime balancing,flat repairs,rotations and some other goodies.
Went to 2 other tire places to compare prices,but since Belle had them right there on site in stock and I was the only customer in there, I was in and out of there within 45 minutes with brand new treads!
Those 3/4" whites look fantastic!

Thanks for all the great info to those who chimed in--I learned a lot about tire sizes.
============================
Went to my local Belle Tire and got 4 new Michelin 215/70r/15`s with 3/4" white walls
EXCELLENT choice -
that body style really NEEDS the whitewalls - :thumbsup:
 

·
Registered
1995 SEDAN DEVILLE-4.9 & 1978 SEDAN DEVILLE-425
Joined
·
1,673 Posts
Discussion Starter #17
=========================
For simplicity's sake,
a 200/50/15 would be 100mm wide, :thepan:
have a 100mm tall sidewall,
and fit a 15" rim.

a 200/50/15 would have a SECTION WIDTH -
the fattest part of the tire - 200mm wide -
100mm tall sidewall -
and fit a 15" rim -
==========================

A 225 is NOT automatically taller than a 215.

yes - it is - assuming the same ASPECT RATIO - and wheel size -
a 225/60/16 would be 10mm wider section width than a 215/60/16 -
and about 6mm taller SIDEWALL - 60% as tall as the section width -
resulting in almost 1/2 inch difference in DIAMETER -
26.63" compared to 26.16" -

---------------



----------


---------------------------------
215/70/r15s will read about 2-3 mph more at 60 mph
actually - it will read LESS than the actual speed -

the 205/70/15 has a diameter of 26.3" -
the 215/70/15 has a diameter of 26.85" -
slightly more than 1/2" difference -

when displaying 60mph -
the 215/70/15 actual speed will be 61.26 -

or

when actual speed is 60mph -
it would display 58.77 -

----------


============================
Went to my local Belle Tire and got 4 new Michelin 215/70r/15`s with 3/4" white walls
EXCELLENT choice -
that body style really NEEDS the whitewalls - :thumbsup:
Thanks for the thumbs up!
You`re right--that body style does need the whitewalls for sure, especially since my '95 Deville has chrome rocker panels all the way around (like the Fleetwoods of that era) which make it look so classy and the white walls really compliments that look.
 

·
Registered
1991 Cadillac Brougham D'Elegance 5.7 Litre, 1994 DeVille
Joined
·
6,796 Posts
Good choice sticking with whitewalls. I agree about them needing them. They just look wrong without them.
 
1 - 18 of 18 Posts
Top