Tyre Sizes

Printable View

15-11-2010, 06:13 PM
jaffaz32

Tyre Sizes

Hi,

I know there is a tyre section but it's a long thread and need a quick repsonse if possible.

My front tyres are 215/45/16 and there isn't much choice.

However if i look up 215/40/16 there are loads to choose from and around half the price.

Can i run 215/40/16 up front instead of the 215/45/16?

Suely the ride wouldnt change that much from a 45 to a 40 profile?

There other alternative is a wider profile tyre, 225/45/16 there is still loads of choice bit more pricey than the 215/40/16 but still lots cheaper than the original 215/45/16.

I'm guessing the orig size is a rare/odd size setup hence why there isn't much choice and loads more than tyres with subtle change i.e. slightly wider or lower profile.

Thanks.
15-11-2010, 09:50 PM
TheSebringOne

There will be no problems with 215 40 16 as some owners have done this since availability is now scarce for oem size. There should be no rubbing when on full lock and TCS should not light up as below 5% tolerance, but speedo would read slightly higher then normal.
15-11-2010, 10:23 PM
Hagasan

Quote:

Originally Posted by TheSebringOne

There will be no problems with 215 40 16 as some owners have done this since availability is now scarce for oem size. There should be no rubbing when on full lock and TCS should not light up as below 5% tolerance, but speedo would read slightly higher then normal.

The speedo is driven off the gearbox so can't see how the front tyre sizes will affect it.
16-11-2010, 12:31 PM
jaffaz32

Thanks for the info.

215/40/16 it is then :D

Now i just need to decide if i go for Falken 452 or toyo Proxies PX4

hmmm.... :P
16-11-2010, 01:29 PM
markc

Actually 225/45/16 (+1.5%) is closer to the original rolling radius than 215/40/16 (-3.6%)

Cheers

Mark
16-11-2010, 05:22 PM
goldnsx

Quote:

Originally Posted by jaffaz32

My front tyres are 215/45/16 and there isn't much choice.

The Hankook RS-2 is said to be a good choice.
16-11-2010, 07:51 PM
havoc

Quote:

Originally Posted by markc

Actually 225/45/16 (+1.5%) is closer to the original rolling radius than 215/40/16 (-3.65%)

Cheers

Mark

225 front tyres would reduce the propensity to understeer in-extremis, which depending on your driving style may or may not be desirable.

Don't think there'd be any issue with the 10mm wider tyre in terms of arch-clearance or liner-scrub - not enough extra width. Might actually fill the front arches out a little better too.
16-11-2010, 11:17 PM
Sudesh

Pirelli do 215/45/16

I also use this site:

http://www.camskill.co.uk/products.p...d=m62b0s4034p0
17-11-2010, 12:29 AM
TheSebringOne

Sudesh, do you mean BS RE040 ? F1 confusion with tyre maker change?
17-11-2010, 12:45 AM
Sudesh

Quote:

Originally Posted by TheSebringOne

Sudesh, do you mean BS RE040 ? F1 confusion with tyre maker change?

Hi,

No I just giving Jaffaz32 the other options available in the original size. But yeah the BS RE040 are mentioned in the link.

The Pirelli's I put on my car this year are P7's.
17-11-2010, 09:49 PM
lotusolly

Quote:

Originally Posted by Hagasan

The speedo is driven off the gearbox so can't see how the front tyre sizes will affect it.

I have 225/45/16 tyres on the front of mine and must say it did change the speedo reading.
Now reads exactly the same as my GPS.

They do also scrub the liner on full lock

Olly
17-11-2010, 10:01 PM
Silver Surfer

Quote:

Originally Posted by lotusolly

I have 225/45/16 tyres on the front of mine and must say it did change the speedo reading.
Now reads exactly the same as my GPS.

They do also scrub the liner on full lock

Olly

Same here...I've got 265/40/17 on the rear.

SS
17-11-2010, 10:28 PM
NSXGB

Quote:

Originally Posted by lotusolly

I have 225/45/16 tyres on the front of mine and must say it did change the speedo reading.
Now reads exactly the same as my GPS.

They do also scrub the liner on full lock

Olly

Are you sure about your speedo changing Olly, does not sound right for the reasons that Gary pointed out....

Did your 225's rub before you lowered your car or only after?
17-11-2010, 11:42 PM
TheSebringOne

Yes, I agree with Mark, 225 40 16 could be a better alternative than 215 40 16 and theres more choice than oem.
24-11-2010, 06:07 PM
lotusolly

Quote:

Originally Posted by NSXGB

Are you sure about your speedo changing Olly, does not sound right for the reasons that Gary pointed out....

Did your 225's rub before you lowered your car or only after?

Sorry for the delayed reply, not logged on recently.

I Think they rubbed before I lowered it too.

I thought the same about the tyres but definetly got a change in speedo reading.

Olly
24-11-2010, 07:34 PM
Nick Graves

Quote:

Originally Posted by havoc

225 front tyres would reduce the propensity to understeer in-extremis, which depending on your driving style may or may not be desirable.

Don't think there'd be any issue with the 10mm wider tyre in terms of arch-clearance or liner-scrub - not enough extra width. Might actually fill the front arches out a little better too.

I've never had a good experience with wider tyres on standard rims - it induces sidewall sogginess. Indeed, standard size on slightly wider rims usually benefits stability, feel & transient response. Just avoid the 'eurolook' 'hellaflush' or whatever...
14-12-2010, 05:21 PM
bernev

Bit late on this thread as I've been offline. I'm struggling to find any tyres to replace the A022s, which are well within the mm limit but the back ones are eleven years old and while not cracking at all are beginning to feel a bit hard. Clearly, nobody can get A022s anymore - that is true isn't it - but I don't seem to be able to find Z rated tyres in the 215/45/16 anywhere. The ones mentioned earlier nithe this thread appeared to be W rated. Anybody got any good recommendations - assume price no object for now - for original size tyres with ZR on the side please?! By the way, it's the 16/17 inch combo. Thanx.
14-12-2010, 11:07 PM
hugabuga

Why do you need Z rated? W is for upto 270km/h, and I am sure it wouldn't blow if you do 300km/h
Check this site: http://www.tyresave.co.uk/tyrspeed.html

I also only know the Bridgestone RE040, in W
Have you considered going for 205/45/16?
As Nick graves said "standard size on slightly wider rims usually benefits stability, feel & transient response", another solution is to keep the same rim and slightly reduce the width of tyre. 205/45/16 is much closer to OEM size 205/50/15 than 215/45/16 ;)
03-01-2011, 06:19 PM
Nick Graves

I should also mention that my car came with the undersized fronts & oversized rears when I bought it.

OK, the tyres were only Kum Hos with sidewalls like a condom, but it did some really weird stuff to the handling; mostly inconsistent understeer, a bit like a really floppy NSX-T on a really bad road.

The Advan AD08s come in the correct size and they are bonkers good.