Online tyre calculator for 20' Wheels????

[after_shock]

As im still looking at the move to 20's which I want to combine with doing the suspension at the same time but have been told numerous times they wont fit can someone explain the below:

Decided to have a fiddle with one of these online tyre calculators,

Stock tyre 245/35/19

Sidewall: 3.4 in
Radius: 12.9 in
Diameter: 25.8 in
Circumference: 81.1 in
Revs/mile: 781.3

New tyre 245/30/20

Sidewall: 2.9 in
Radius: 12.9 in
Diameter: 25.8 in
Circumference: 81.1 in
Revs/mile: 781.3

As you can see identical, the thinner tyre should in theory give exactly the same size circumference and same overall size hence should fit straight on without problems, or am I missing something????

[BI6VXR]

No you ain't missing owt. Fitted 20's myself with tyre size you quote.

[after_shock]

BI6VXR said:

No you ain't missing owt. Fitted 20's myself with tyre size you quote.

Cheers for that, done them on a Monaro?

[monkfish1]

No reason why you cant fit those tyres.

[S WO2TEC]

monkfish1 said:

No reason why you cant fit those tyres.

roger im very happy with my wheels mate look lovley but im sure they will look beter when i get the nut to put them on ...lol

never mind

[monkfish1]

S WO2TEC said:

monkfish1 said:

No reason why you cant fit those tyres.

roger im very happy with my wheels mate look lovley but im sure they will look beter when i get the nut to put them on ...lol

never mind

Nice citylink man should deliver them tommorow

[007 VXR]

[/quote]

Nice citylink man should deliver them tommorow
[/quote]

hes like a kid at with his new toy , and dad forgot to get batterys

[after_shock]

monkfish1 said:

No reason why you cant fit those tyres.

Sounds good to me, now just need to find some wheels, the hard part

What wheel size will fit those tyres, 20 x 8's or 8.5's?

[BI6VXR]

yep fitted to vxr monaro

[after_shock]

BI6VXR said:

yep fitted to vxr monaro

What make wheels you go for? Also source them in the U.K or have to go abroad for them?

[ARAF]

Am I right in assuming that standard 19" Monaro wheels are the same offset as VXR8 fronts (ET48)?

[monkfish1]

ARAF said:

Am I right in assuming that standard 19" Monaro wheels are the same offset as VXR8 fronts (ET48)?

Yes.

[BI6VXR]

Went for VXR8 style from Aus, better quality out there in the market I guess but just happen to like them!

[stevieturbo]

http://www.1010tires.com/tiresizecalculator.asp