S40 (New) Wheels/Tyres : - Going from 215 to 225 on 18" wheels?

Volvo6 · Oct 19th, 2011, 17:25

I've found a bit of past info on this but not much...so thought I'd ask...

I've got a V50 2.0D R-Design with 215/45/R18 tyres on at the moment, I have heard of people going to 225, what effect though does this have on the ride/handling? Are there any downsides to doing this?

rapidvxr · Oct 19th, 2011, 17:39

hi , i went to 225/45/18 , ride is better , handles a bit sloppyier , but tyres much cheaper , i have had tyres rub on arch liner once but car was way overloaded

Daim · Oct 19th, 2011, 19:29

Well, with 215/45R18 you need a speedo update to get the right speeds shown.
With 225/40R18 you don't need the update. The 225/40ies cost less per tire than 225/45s. With 225/45s you'll have a speedo which may even show less than driven...

-> diameter with 215/45 R18 incl. rim: 65,1 cm
-> diameter with 225/40 R18 incl. rim: 63,7 cm
-> diameter with 225/45 R18 incl. rim: 66 cm

-> circumference with 215/45 R18: 197,8 cm
-> circumference with 225/40 R18: 193,7 cm
-> circumference with 225/45 R18: 200,5 cm

If you need an update (Volvo says 18" with 215/45 R18 needs an update!), then you'll definately need an update and even then it might be a bit on the "sloppy" side...

rapidvxr · Oct 19th, 2011, 19:36

Quote:

Originally Posted by Daim

Well, with 215/45R18 you need a speedo update to get the right speeds shown.
With 225/40R18 you don't need the update. The 225/40ies cost less per tire than 225/45s. With 225/45s you'll have a speedo which may even show less than driven...

-> diameter with 215/45 R18 incl. rim: 65,1 cm
-> diameter with 225/40 R18 incl. rim: 63,7 cm
-> diameter with 225/45 R18 incl. rim: 66 cm

-> circumference with 215/45 R18: 197,8 cm
-> circumference with 225/40 R18: 193,7 cm
-> circumference with 225/45 R18: 200,5 cm

If you need an update (Volvo says 18" with 215/45 R18 needs an update!), then you'll definately need an update and even then it might be a bit on the "sloppy" side...

speedo is now more accurate with 225/45/18 according to gps speedo

Daim · Oct 19th, 2011, 19:49

Quote:

Originally Posted by rapidvxr

speedo is now more accurate with 225/45/18 according to gps speedo

With or without speedo update?

My 215/45 R18s (on my older rims) were without an update spot on with the speed. The 225/35 R19 (at the moment) are out by a couple of km/h.

rapidvxr · Oct 19th, 2011, 21:18

without any updates since may 2010 , speedo with original fitment tyres was over reading by 5mph now its only 2mph

C30 Driver · Oct 20th, 2011, 10:02

Quote:

Originally Posted by rapidvxr

hi , i went to 225/45/18 , ride is better , handles a bit sloppyier , but tyres much cheaper , i have had tyres rub on arch liner once but car was way overloaded

When you went from 215 to 225 did you change tyre make?

I fiind the grip better and the ride much better on the 225's

rapidvxr · Oct 20th, 2011, 20:09

yes , went to budget tyres and had no probs with them

C30 Driver · Oct 20th, 2011, 20:19

Quote:

Originally Posted by rapidvxr

yes , went to budget tyres and had no probs with them

Would this be the reason the ride felt a bit slopy.

kopite · Oct 20th, 2011, 20:34

I'm guessing you'll be sacrificing MPG with more rubber on the road

Oct 19th, 2011, 17:25	#1
Volvo6 Master Member Last Online: Apr 9th, 2024 18:10 Join Date: Dec 2010 Location: Winchester	Going from 215 to 225 on 18" wheels? I've found a bit of past info on this but not much...so thought I'd ask... I've got a V50 2.0D R-Design with 215/45/R18 tyres on at the moment, I have heard of people going to 225, what effect though does this have on the ride/handling? Are there any downsides to doing this?

Oct 19th, 2011, 19:29	#3
Daim Brit in Germany Last Online: Apr 17th, 2024 19:16 Join Date: Jan 2011 Location: Bremen	Well, with 215/45R18 you need a speedo update to get the right speeds shown. With 225/40R18 you don't need the update. The 225/40ies cost less per tire than 225/45s. With 225/45s you'll have a speedo which may even show less than driven... -> diameter with 215/45 R18 incl. rim: 65,1 cm -> diameter with 225/40 R18 incl. rim: 63,7 cm -> diameter with 225/45 R18 incl. rim: 66 cm -> circumference with 215/45 R18: 197,8 cm -> circumference with 225/40 R18: 193,7 cm -> circumference with 225/45 R18: 200,5 cm If you need an update (Volvo says 18" with 215/45 R18 needs an update!), then you'll definately need an update and even then it might be a bit on the "sloppy" side... __________________ The Best Nation Is Imagination 2010 V70 (Type 135) D5 (D5244T10) Automatic (TF-80SC)

Oct 19th, 2011, 21:18	#6
rapidvxr Member Last Online: Nov 3rd, 2020 21:43 Join Date: Dec 2010 Location: selby	without any updates since may 2010 , speedo with original fitment tyres was over reading by 5mph now its only 2mph Last edited by rapidvxr; Oct 19th, 2011 at 21:21.

Oct 19th, 2011, 17:39	#2
rapidvxr Member Last Online: Nov 3rd, 2020 21:43 Join Date: Dec 2010 Location: selby	hi , i went to 225/45/18 , ride is better , handles a bit sloppyier , but tyres much cheaper , i have had tyres rub on arch liner once but car was way overloaded

Oct 20th, 2011, 20:09	#8
rapidvxr Member Last Online: Nov 3rd, 2020 21:43 Join Date: Dec 2010 Location: selby	yes , went to budget tyres and had no probs with them

Oct 20th, 2011, 20:34	#10
kopite Member Last Online: Jul 14th, 2013 17:00 Join Date: May 2011 Location: Nr Liverpool	I'm guessing you'll be sacrificing MPG with more rubber on the road

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