I don’t know the answer to this (maybe I should as I have a saloon). Mine is running 185/55 x 14, I can’t recall the offset. On the Rear you need to be aware of how close the tyres are to the trailing arms, as well as inner arches. At the front the steering rack is either a standard or XR2. Some folk state (incorrectly) that the XR2 rack is a ‘quick’ rack ie higher ratio than standard, this is not the case as both racks have the same ratio! The confusion is that the XR2 rack is less turns lock to lock (numbers in Haynes manual?) , and is because the rack in the XR2 is restricted using plastic inserts. I have verified the same ratio with both racks ‘on the bench’. Long and short (no pun intended) of it is that if you have an XR2 rack there is less likelihood of the tyres rubbing bodywork when turned.
Martin Scott
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We did lots of testing with wheel sizes when we had a 2+2.
It originally came with the factory recommended 14 inch wheels with the factory recommended sizes, it was the factory demo/brochure car so was still fitted with the wheels from the brochure photos.
We tried wheel sizes from 13 to 16 inch.
For comfort 13 inch were by far the best for comfort but the wheels looked too small and the handling was the worst of all tested.
The stock size it came with was 14 inch, it was fitted with the ford lattice xr3i cabro style wheels. They looked ok and it drove better than with the 13’s.
For us for road use 15’s fitted with 195 45 15 tyres is the best compromise of looks, easy to get tyres and good road manners.
When we tried 16’s they were very very harsh and on a track superb but for road use a step too far.
When I bought my saloon it was fitted with 15 wheels, ford style again which I didn’t like as too modern, so bought a new set of wheels for it.
The wheels bought were 15 inch using the same logic that applied to the 2+2. Fitted with 195 45 15 there has never been any tyre rubbing even with 4 people and the dogs in the car.
In my experience the brand of tyre can effect the way the 2+2/saloon drives almost as much as wheel size.
When I bought my saloon it had 15s with 195b 45 unbranded tyres and the ride was quite harsh yet when fitted with the new wheels which are the same size apart from 2mm less offset fitted with toyo tyres and the ride is much better.
I am the historian for the QOC & If you don’t mind would you mind forwarding the registration and chassis number of your saloon to quantumh...@gmail.com as I have recently updated the quantum owners club register for the model and would like to check to see if we have your car on the register list.
Paul
From: Mick L
To view this discussion on the web visit https://groups.google.com/d/msgid/quantumowners/6441accc.050a0220.f6724.3041SMTPIN_ADDED_MISSING%40gmr-mx.google.com.
We never went as wide as 7. The ones we used were 6.5 or 6 wide.
Current ones on mine are 6 with a offset of 36
Best width wheels for 195 tyres are in the 6 to 6.5 range to keep the sidewalls at the best angles.
When buying the new wheels for the saloon I was tempted for going bigger just for the looks but arch gap and tyre profile then start to look a little silly.
If your car has been fitted with lowering uprated springs best bet is to get some standard xr2/normal fiesta front springs and if you can find some a set of standard 1100 fiesta rear springs.
Of all the rear springs we tried the 1100 rear springs were the sweet spot for the last quantum.
On the xr2 originally the front spring rating was not that much higher than a standard fiesta but the rear xr2 springs were a lot higher rating. Not that many xr2 or quantums will have the originally fitted springs now anyway.
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From: Mick L
Sent: 21 April 2023 11:28
To: quantu...@googlegroups.com
Subject: Re: [Quantum Owners] Wheel and Tyre fitment 15 " 7 wheels and14s...and Hello :)
ThankYou for I formation. So based on your testing would 15" 7 wide 35 offset fit ok?
I will forward our u formation over once I'm clean as I'm removing the engine as we speak.
Thanks Mick
To view this discussion on the web visit https://groups.google.com/d/msgid/quantumowners/AM9P193MB0823C3971A524CDD4CD33017E5609%40AM9P193MB0823.EURP193.PROD.OUTLOOK.COM.
Remember by the way that the wheel width I am quoting is not the width of the wheel physically but the width between the two points the tyre beads sit against.
If a wheel is being measured rim to rim they will be a margin wider than the stamped size of the back of the rim.
Sent from Mail for Windows
From: Mick L
Sent: 21 April 2023 11:20
To: quantu...@googlegroups.com
Subject: Re: [Quantum Owners] Wheel and Tyre fitment 15 " 7 wheels and 14s...and Hello :)
ThankYou for I formation. So based on your testing would 15" 7 wide 35 offset fit ok?
I will forward our u formation over once I'm clean as I'm removing the engine as we speak.
Thanks Mick
From: 'Paul S Quantum' via Quantum Owners Group <quantu...@googlegroups.com>
Sent: 21 April 2023 08:25
To: quantu...@googlegroups.com <quantu...@googlegroups.com>
Subject: RE: [Quantum Owners] Wheel and Tyre fitment 15 " 7 wheels and 14s...and Hello :)
We did lots of testing with wheel sizes when we had a 2+2.
It originally came with the factory recommended 14 inch wheels with the factory recommended sizes, it was the factory demo/brochure car so was still fitted with the wheels from the brochure photos.
We tried wheel sizes from 13 to 16 inch.
For comfort 13 inch were by far the best for comfort but the wheels looked too small and the handling was the worst of all tested.
The stock size it came with was 14 inch, it was fitted with the ford lattice xr3i cabro style wheels. They looked ok and it drove better than with the 13’s.
For us for road use 15’s fitted with 195 45 15 tyres is the best compromise of looks, easy to get tyres and good road manners.
When we tried 16’s they were very very harsh and on a track superb but for road use a step too far.
When I bought my saloon it was fitted with 15 wheels, ford style again which I didn’t like as too modern, so bought a new set of wheels for it.
The wheels bought were 15 inch using the same logic that applied to the 2+2. Fitted with 195 45 15 there has never been any tyre rubbing even with 4 people and the dogs in the car.
In my experience the brand of tyre can effect the way the 2+2/saloon drives almost as much as wheel size.
When I bought my saloon it had 15s with 195b 45 unbranded tyres and the ride was quite harsh yet when fitted with the new wheels which are the same size apart from 2mm less offset fitted with toyo tyres and the ride is much better.
I am the historian for the QOC & If you don’t mind would you mind forwarding the registration and chassis number of your saloon to quantumh...@gmail.com as I have recently updated the quantum owners club register for the model and would like to check to see if we have your car on the register list.
To view this discussion on the web visit https://groups.google.com/d/msgid/quantumowners/AM9P193MB0823C3971A524CDD4CD33017E5609%40AM9P193MB0823.EURP193.PROD.OUTLOOK.COM.
To view this discussion on the web visit https://groups.google.com/d/msgid/quantumowners/AM9P193MB0823696084455E072D4A6450E5609%40AM9P193MB0823.EURP193.PROD.OUTLOOK.COM.