I put 20" on mine, yes a harsher ride after but handles much better
Less roll into the corners and all round less bouncy to drive

Not had any problems in snow or in the off road in the fields
 
The 20s handle better cos its a lower profile tyre.and as far as going off road the 20s are just the same as 18s just depends on the tyres you have fitted.almost the same diameter only 20 mm wider?
Young man, I feel I have to correct you here as you've fallen victim to years of marketing bull****.

The current trend with vehicles is bigger wheels, smaller tyres and firmer suspension. The idea being hard = fast. Unfortunately this is incorrect. It is marketing bull**** damn near all marquees are using to shift metal to dip****s.

The truth is a fast car is a supple one. Yes, you want a degree of firmness to prevent body roll, but when you get too hard the suspension stops doing its job and it slows you down. What happens is you'll bounce around, losing contact with the road surface and constantly having to adjust the steering.

This isn't a fast way to drive, it also puts a lot of stress on all of the rubber parts that attach the wheels to the chassis. I can tell you something for free, if you took your P38 around a race track with disgusting drugdealer wheels for 5 hot laps then switched to 18s and did another 5 hotlaps, you will find that lap times come down when using the 18s. Suspension on vehicles is designed with the sidewall in mind as tyres play a key part in handling. They are your first point of contact to the road. The theory is 45-50% sidewall is the minimum you can go down to before you start having an adverse affect on the handling and slow down. To make 20" wheels fit you'd need a tiny slither of rubber, I assume you're down to something stupid like 25-30%? Yeah, good luck with that.

If you just come clean and say you are using 20" wheels because you think they look good, then fine, have at it. It is your car after all. But if you continue to delude yourself that you've increased handling then you're a misguided moron who believes everything the marketing department tells you.
 
Young man, I feel I have to correct you here as you've fallen victim to years of marketing bull****.

The current trend with vehicles is bigger wheels, smaller tyres and firmer suspension. The idea being hard = fast. Unfortunately this is incorrect. It is marketing bull**** damn near all marquees are using to shift metal to dip****s.

The truth is a fast car is a supple one. Yes, you want a degree of firmness to prevent body roll, but when you get too hard the suspension stops doing its job and it slows you down. What happens is you'll bounce around, losing contact with the road surface and constantly having to adjust the steering.

This isn't a fast way to drive, it also puts a lot of stress on all of the rubber parts that attach the wheels to the chassis. I can tell you something for free, if you took your P38 around a race track with disgusting drugdealer wheels for 5 hot laps then switched to 18s and did another 5 hotlaps, you will find that lap times come down when using the 18s. Suspension on vehicles is designed with the sidewall in mind as tyres play a key part in handling. They are your first point of contact to the road. The theory is 45-50% sidewall is the minimum you can go down to before you start having an adverse affect on the handling and slow down. To make 20" wheels fit you'd need a tiny slither of rubber, I assume you're down to something stupid like 25-30%? Yeah, good luck with that.

If you just come clean and say you are using 20" wheels because you think they look good, then fine, have at it. It is your car after all. But if you continue to delude yourself that you've increased handling then you're a misguided moron who believes everything the marketing department tells you.

+1, it's all in the mind. I was able to lap faster in my MR2 on standard tyres than some of the go faster lot on their rubber bands. Mind you my race car did run 25 profile in the dry:)
 
Young man, I feel I have to correct you here as you've fallen victim to years of marketing bull****.

The current trend with vehicles is bigger wheels, smaller tyres and firmer suspension. The idea being hard = fast. Unfortunately this is incorrect. It is marketing bull**** damn near all marquees are using to shift metal to dip****s.

The truth is a fast car is a supple one. Yes, you want a degree of firmness to prevent body roll, but when you get too hard the suspension stops doing its job and it slows you down. What happens is you'll bounce around, losing contact with the road surface and constantly having to adjust the steering.

This isn't a fast way to drive, it also puts a lot of stress on all of the rubber parts that attach the wheels to the chassis. I can tell you something for free, if you took your P38 around a race track with disgusting drugdealer wheels for 5 hot laps then switched to 18s and did another 5 hotlaps, you will find that lap times come down when using the 18s. Suspension on vehicles is designed with the sidewall in mind as tyres play a key part in handling. They are your first point of contact to the road. The theory is 45-50% sidewall is the minimum you can go down to before you start having an adverse affect on the handling and slow down. To make 20" wheels fit you'd need a tiny slither of rubber, I assume you're down to something stupid like 25-30%? Yeah, good luck with that.

If you just come clean and say you are using 20" wheels because you think they look good, then fine, have at it. It is your car after all. But if you continue to delude yourself that you've increased handling then you're a misguided moron who believes everything the marketing department tells you.

Make you right. I've never seen a Formula 1 car with low profile tyres.
 
To make 20" wheels fit you'd need a tiny slither of rubber, I assume you're down to something stupid like 25-30%? Yeah, good luck with that.

actualy down to 40 profile to get the speed adjustment correct. well at least thats whats on mine, 275/40/20. and i have yet to see any form of decent off road or AT tyre in those sizes. i'm only using mine for summer road use. got my 16's for winter and off road :)
 
Make you right. I've never seen a Formula 1 car with low profile tyres.

12.4.1 Complete wheel width must lie between 305 and 355mm when fitted to the front of the car and between 365 and 380mm when fitted to the rear.
12.4.2 Complete wheel diameter must not exceed 660mm when fitted with dry-weather tyres or 670mm when fitted with wet-weather tyres.
12.4.3 Complete wheel width and diameter will be measured horizontally at axle height, with the wheel held in a vertical position and when fitted with new tyres inflated to 1.4 bar.
12.4.4 Wheel bead diameter must lie between 328 and 332mm.

just so you have some idea :D:D:D
 
young man, i feel i have to correct you here as you've fallen victim to years of marketing bull****.

The current trend with vehicles is bigger wheels, smaller tyres and firmer suspension. The idea being hard = fast. Unfortunately this is incorrect. It is marketing bull**** damn near all marquees are using to shift metal to dip****s.

The truth is a fast car is a supple one. Yes, you want a degree of firmness to prevent body roll, but when you get too hard the suspension stops doing its job and it slows you down. What happens is you'll bounce around, losing contact with the road surface and constantly having to adjust the steering.

This isn't a fast way to drive, it also puts a lot of stress on all of the rubber parts that attach the wheels to the chassis. I can tell you something for free, if you took your p38 around a race track with disgusting drugdealer wheels for 5 hot laps then switched to 18s and did another 5 hotlaps, you will find that lap times come down when using the 18s. Suspension on vehicles is designed with the sidewall in mind as tyres play a key part in handling. They are your first point of contact to the road. The theory is 45-50% sidewall is the minimum you can go down to before you start having an adverse affect on the handling and slow down. To make 20" wheels fit you'd need a tiny slither of rubber, i assume you're down to something stupid like 25-30%? Yeah, good luck with that.

If you just come clean and say you are using 20" wheels because you think they look good, then fine, have at it. It is your car after all. But if you continue to delude yourself that you've increased handling then you're a misguided moron who believes everything the marketing department tells you.

+1
 
Young man, I feel I have to correct you here as you've fallen victim to years of marketing bull****.

The current trend with vehicles is bigger wheels, smaller tyres and firmer suspension. The idea being hard = fast. Unfortunately this is incorrect. It is marketing bull**** damn near all marquees are using to shift metal to dip****s.

The truth is a fast car is a supple one. Yes, you want a degree of firmness to prevent body roll, but when you get too hard the suspension stops doing its job and it slows you down. What happens is you'll bounce around, losing contact with the road surface and constantly having to adjust the steering.

This isn't a fast way to drive, it also puts a lot of stress on all of the rubber parts that attach the wheels to the chassis. I can tell you something for free, if you took your P38 around a race track with disgusting drugdealer wheels for 5 hot laps then switched to 18s and did another 5 hotlaps, you will find that lap times come down when using the 18s. Suspension on vehicles is designed with the sidewall in mind as tyres play a key part in handling. They are your first point of contact to the road. The theory is 45-50% sidewall is the minimum you can go down to before you start having an adverse affect on the handling and slow down. To make 20" wheels fit you'd need a tiny slither of rubber, I assume you're down to something stupid like 25-30%? Yeah, good luck with that.

If you just come clean and say you are using 20" wheels because you think they look good, then fine, have at it. It is your car after all. But if you continue to delude yourself that you've increased handling then you're a misguided moron who believes everything the marketing department tells you.
I take it you've never driven yours on 20s if you read the post properly you'll see its 45 profile on mine that works out 16 mm smaller sidewall than the 18s going from 16 to 18 inch there is 25 mm difference in profile.even running 22s you still have a 100 mm profile.if you have driven with 18s and then 20s you easily feel the car being more stable around corners.as far as going around a race track with a range rover that's a bit extreme.maybe someone should tell all the race teams to put big profile tyres on all there race cars because they handle so much better.
 
i take it you've never driven yours on 20s if you read the post properly you'll see its 45 profile on mine that works out 16 mm smaller sidewall than the 18s going from 16 to 18 inch there is 25 mm difference in profile.even running 22s you still have a 100 mm profile.if you have driven with 18s and then 20s you easily feel the car being more stable around corners.as far as going around a race track with a range rover that's a bit extreme.maybe someone should tell all the race teams to put big profile tyres on all there race cars because they handle so much better.


+1
 
I take it you've never driven yours on 20s if you read the post properly you'll see its 45 profile on mine that works out 16 mm smaller sidewall than the 18s going from 16 to 18 inch there is 25 mm difference in profile.even running 22s you still have a 100 mm profile.if you have driven with 18s and then 20s you easily feel the car being more stable around corners.as far as going around a race track with a range rover that's a bit extreme.maybe someone should tell all the race teams to put big profile tyres on all there race cars because they handle so much better.

what width tyres are you using? 245? 255? 265? 275?
 
ORIGINAL 255/55/18 OR 255/65/16

Rim Diameter: 406.4mm
Sidewall Depth: 165.75mm
Total Diameter: 737.9mm
Rolling Circumference*: 2225.45mm


NEW TYRE AT 275/45/20

Rim Diameter: 508mm
Sidewall Depth: 123.75mm
Total Diameter: 755.5mm
Rolling Circumference*: 2278.53mm

Changing your wheels/tyres may effect your speedometer reading!
With this new combination your speed will be 2.39% of that inidicated.
When your speedo reads 30 mph you will actually be doing 30.72mph


275/40/20

Rim Diameter: 508mm
Sidewall Depth: 110mm
Total Diameter: 728mm
Rolling Circumference*: 2195.6mm

Changing your wheels/tyres may effect your speedometer reading!
With this new combination your speed will be -1.34% of that inidicated.
When your speedo reads 30 mph you will actually be doing 29.6mph


JUST AS AN EXAMPLE OF HOW THE TYRES MATCH UP.
 
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