endrop - for all your online needs

General max tyre width

Currently reading:
General max tyre width

M

mikegibbons1957

New member
Joined
Oct 14, 2012
Messages
77
Points
19
Location
leigh Lancashire
was wandering what would be max tyre width on my Claw alloys if i use 4x98 20mm 58.1 Centre Bore Hubcentric Wheel Spacers would 245/255 be possible ??:confused:
 
mikegibbons1957 ive got a stilo with 205 50 17 tyres on the rear with room still. But my advise is to check you original tyres first as your moving the wheel 20mm outwards and wider tyres could cause rubbing on the arches especially under load
 
mikegibbons1957 said:
was wandering what would be max tyre width on my Claw alloys if i use 4x98 20mm 58.1 Centre Bore Hubcentric Wheel Spacers would 245/255 be possible ??:confused:
Click to expand...

For starters, what's the rim width for the claw alloys? Then:

https://www.google.co.uk/?gws_rd=ssl#q=tyre+width+for+7j

I think the largest OEM rims for the Multipla were 7J 17" but I'm not sure what their offset was. The 15" 6.5J alloys as fitted to the Multipla ELX have a 31.5mm offset. Many here have fitted 205/55 tyres to those rims without a problem. I think I remember 215's giving problems for some people, with them fouling the rear arches.

If what you've currently got fitted works, the best thing to do is take some measurements from the car:


  • What's the min. clearance from the top (12 'o' clock) of the front tyre to the underside of the spring seat?
  • What's the min. distance between the inner sidewall of the front tyre and the suspension strut tube?
  • If you put a straight edge vertically up the outer sidewall of the front/rear tyre, how far out from that edge is the inner lip of the wheel arch?
  • On full lock (left and right) what's the minimum gap between the tyre and the wheel arch liner?
  • What's the min. distance between the inner sidewall of the rear tye and the swingarm?

Armed with all that, head over here:

http://www.wheel-size.com/calc/?whe...=225-45-17X7.5ET40&fcl=50mm&wcl=30mm&scl=50mm

And start playing around with the numbers. Also bear in mind that the larger the wheels and tyres you fit, the rotating mass will go up (a lot, in some cases) so you'll end up with a car that accelerates slower and turns into corners slower as well....
 
Last edited:
It's the rolling diameter/circumference of the tyre that matters for speedo accuracy. The wheel size site I linked to has a section that'll give you the speedo error compared to OEM. It would be useful to found out the offset of the Claws.
 
these are stats for wheels , 225/45R17 7.5Jx17 ET37 4x98 M12 x 1.25 58.1 they say 225/45/17 is fine , so my thoughts are 245 possible , speedo reading offset by use my sat nav most of the time ,255/45/17 i would like most but pushing it to far i think , :D
 
How is it a "sleeper" if you've clearly lowered it and jammed up the wheelarches with the biggest, fattest, widest wheels and tyres that would physically fit? :confused:

You'd get the surprise effect if you just optimised the performance sensibly and thoughtfully, without making it look daft.

Keep the correct rolling radius for the standard tyres, if you must go one size wider then lower the profile e.g. from 45 to 40. Otherwise you just lose on-the-road performance. I'm sure you already know this... even if you seem to want to ignore it.
 
for starts it a fiat Multipla ....it will be pushing 200bhp +hidden under bonnet the wide tyres [more grip for said 200bhp] i see a multipla one or two a month locally what i lose in having the perfect setup i gain glarish wheels ??? it looks from exterior a multi it as better brakes and will upset local yobs ,not a track car just a very quick multi as far as i see no one accept the odd polish guy as tried this ,when done will show garish pictures ,most sleepers show signs of modification if you no where to look could keep it all stock but 200+ bhp needs help braking/and handling somewere or first trip out will be last trip out ,as 225 tyres on now, going to 245 is not going to turn it into Circus side show, alloys on are quoted 225 45 17 tyres one size up is not going anger the neighbours its a trade off some where ,being a Multi running 160bhp on standad makes it a sleeper ,just taking up a notch reasons because i can everyone gets caught up in fine details of some things car will not be Perfect but will be fun ,i will take fun over Perfect everyday .................:D
 
plus any tyres fitted will be correct profile to suit car as best as possible , i was thinking 19s then realized thats crossing line then maybe just Maybe i would have joined the Circus. :)
 
bluejohn125 said:
How is it a "sleeper" if you've clearly lowered it and jammed up the wheelarches with the biggest, fattest, widest wheels and tyres that would physically fit? :confused:

You'd get the surprise effect if you just optimised the performance sensibly and thoughtfully, without making it look daft.

Keep the correct rolling radius for the standard tyres, if you must go one size wider then lower the profile e.g. from 45 to 40. Otherwise you just lose on-the-road performance. I'm sure you already know this... even if you seem to want to ignore it.
Click to expand...

QFT...

Thats exactly my thoughts. The only concession on my Dob is a set of alloys, and I took it to 15" from the standar 14" for a 2004.

I stripped it bare, opened up the intake, opened up the baffles on the rear box a tad, stuck an ItalianSpeed chip that takes the clutch out in 3rd if I'm stupid.

looks like an old van, and takes the **** ;)
 
If it's for show, fit big wheels. If it's for go, fit the lightest wheel/tyre combo you can find that will transmit all of the engine power to the road without letting go.

The lightest wheel/tyre combo will not include 17+" rims (or 16", for that matter). Have a look on the MX5/Miata racing forums. There's much useful info there on the subject, where people are only interested in making their cars go/handle to the max.
 
neither show or out an out racer its a tuned multi ,which is not normally a tuned car ,just taking its potential towards the fast fiat territory ,my Doblo is 145bhp decatted ,just upped the brakes mostly standard surprises odd person, multi just upping the anti in every department in real time use any slight failings hopefully i will not notice like i said its no track car and will not be road raced every day just there when needed its a hobby car something Quirky different i like different Quirky in equal measures realise there is a formula for perfect set up optimal performance at the end of the day it just A Fiat multipla going quicker than most its that simple really .:)
 
mikegibbons1957 said:
neither show or out an out racer its a tuned multi ,which is not normally a tuned car ,just taking its potential towards the fast fiat territory ,my Doblo is 145bhp decatted ,just upped the brakes mostly standard surprises odd person, multi just upping the anti in every department in real time use any slight failings hopefully i will not notice like i said its no track car and will not be road raced every day just there when needed its a hobby car something Quirky different i like different Quirky in equal measures realise there is a formula for perfect set up optimal performance at the end of the day it just A Fiat multipla going quicker than most its that simple really .:)
Click to expand...

It's your baby, do it how you want :)

My only comment on tyres is that the thin wall looks good to some eyes (I don't personally think they do - for me a wheel looks best when theres a balance between rubber and the wheel itself) and they do give you a sh*t ride and do hammer the suspension more - but over and above that, they don't always put down the traction as well as a normal walled tyre - they can skip and jump rather than bite - not a great problem on a near perfect road / track - but in general use on normal roads, they can give more traction problems than you expect, enough to lose you any (very minor, to be honest) gains on twisty bits)

I wouldn't go lower than a 195/60 ish ration personally - either for looks or overall performance. You're giving nothing away to (eg) 195/40 in terms of road holding or rolling.

my two bob... ;)
 
i like the wide stance look agreed the 40 profile less rubber between tyre and road can on bad roads be a nuisance , finding a compromise between the two i suppose will go for 45 .as in life things are not always ideal .
 
I don't think putting a set of 17" wheels on a car really qualifies it as "obviously modified "

Even little shopping cars are available with that size now. The days when large saloon cars were rolling on big 15" wheels are long gone lol.

19" is the new 15"
The Multipla looks absurd on its little 15" rims. Like it could fall over on the next bend.
I'll be fitting a set of 17" Stilo blades on my multi shortly.
 
You must log in or register to reply here.

Similar threads

B
General tyre size comparison
Replies
5
Views
964
AaronG
AaronG
J
General Tyre wear
Replies
5
Views
846
Jon mabbitt
J
L
General All Weather Tyres
Replies
5
Views
1K
reneduba
R
M
Technical Max Trailer weight for JTD115
Replies
1
Views
651
martyc5674
M
Alpitlum
General New tyres
Replies
0
Views
653
Alpitlum
Alpitlum
Back
Top