4.5j rims - tyre help

brucelee34 · Sep 23rd, 2008, 18:40

Hello. sorry for all these posts of mine but I did look in the search facility and haven't found answer to this question. I am wondering what tyres I should put on my rims which are the steel 4.5j x 15 wheels that were standard on the P1800s.
I currently have four different brand 165/15 (80 profile?) tyres which have different thread patterns and want to replace all four. Should I stick with 165 profile tyres or in you experiences is there a better tyre size for these wheels?

I really appreciate all your help.

Paul

TomTom · Sep 23rd, 2008, 21:24

Very much personal preference, but I think that even with the 4.5s you still should stick with the stock tyre, 165R15s. Most places get order in 2-3 brands, and my own favourites are Vredesteins, an ideal mix of quality, price and quietness on the road (good for shedding the water as well).

Tom

Derek UK · Sep 23rd, 2008, 21:35

What he said. Stock is good and it will drive even better on modern rubber. Use modern pressures too, 28-30 psi, according to your taste.

VolvoFan · Sep 24th, 2008, 19:26

Why should you use "modern" pressures if using original spec. tyre sizes?

222s · Sep 24th, 2008, 19:35

Quote:

Originally Posted by VolvoFan

Why should you use "modern" pressures if using original spec. tyre sizes?

Almost all the tyre pressures in the handbooks are for crossply tyres - the pressures that Derek mentions are for radials.

VolvoFan · Sep 24th, 2008, 19:38

But the 1800 series came with radials as standard, so the figures in the driver's manual are for those.

brucelee34 · Sep 24th, 2008, 22:03

oh.. well they currently seem to be about 44 psi... I guess they need lowering..

Derek UK · Sep 24th, 2008, 23:40

44psi EEEEEK! Well it will give you very light steering I suppose but a greasy roundabout in the wet might prove challenging. I haven't got an 1800 handbook but an Amazon one from '66 reads 20 front 23 rear for standard cross plies and "sports" 165s 15 which means radials, for 1 -2 persons. However the handbook in front of me has a sticker in for "braced tread tyres" which raises it to 26 front 28 rear with 2 extra pounds added for high speed driving which for Volvo means over 90mph (grin). Modern tyres are designed to run at higher pressures, this also reduces rolling resistance without compromising grip too much. Your tyres may say on the side "Maximum Pressure 45psi" but that doesn't mean that you get the best out of them at 44. I bet it rides like a skateboard at those pressures.

brucelee34 · Sep 25th, 2008, 07:36

I haven;t actually got to drive it anywhere as there are a few finishing touches. Maybe I should test the other tyres as they all look different levels.
I have always put between 28 / 32 into a tyre and normally staggered the pressures between front and rear. I would think the levels you quoted sound fine to me. Once I have the new tyres i'll play about a little with the pressures and then maybe find some balance that works for me.

Sep 23rd, 2008, 18:40	#1
brucelee34 Junior Member Last Online: Oct 16th, 2015 10:50 Join Date: Aug 2008 Location: Hertfordshire	4.5j rims - tyre help Hello. sorry for all these posts of mine but I did look in the search facility and haven't found answer to this question. I am wondering what tyres I should put on my rims which are the steel 4.5j x 15 wheels that were standard on the P1800s. I currently have four different brand 165/15 (80 profile?) tyres which have different thread patterns and want to replace all four. Should I stick with 165 profile tyres or in you experiences is there a better tyre size for these wheels? I really appreciate all your help. Paul

Sep 23rd, 2008, 21:24	#2
TomTom Master Member Last Online: Jun 3rd, 2021 16:03 Join Date: Dec 2002 Location: London	Very much personal preference, but I think that even with the 4.5s you still should stick with the stock tyre, 165R15s. Most places get order in 2-3 brands, and my own favourites are Vredesteins, an ideal mix of quality, price and quietness on the road (good for shedding the water as well). Tom

Sep 23rd, 2008, 21:35	#3
Derek UK VOC Member Last Online: Yesterday 14:29 Join Date: Jul 2006 Location: Chatham	What he said. Stock is good and it will drive even better on modern rubber. Use modern pressures too, 28-30 psi, according to your taste.

Sep 24th, 2008, 19:26	#4
VolvoFan Master Member Last Online: Yesterday 22:06 Join Date: Dec 2002 Location: Alton	Why should you use "modern" pressures if using original spec. tyre sizes?

Sep 24th, 2008, 19:38	#6
VolvoFan Master Member Last Online: Yesterday 22:06 Join Date: Dec 2002 Location: Alton	But the 1800 series came with radials as standard, so the figures in the driver's manual are for those.

Sep 24th, 2008, 22:03	#7
brucelee34 Junior Member Last Online: Oct 16th, 2015 10:50 Join Date: Aug 2008 Location: Hertfordshire	oh.. well they currently seem to be about 44 psi... I guess they need lowering..

Sep 24th, 2008, 23:40	#8
Derek UK VOC Member Last Online: Yesterday 14:29 Join Date: Jul 2006 Location: Chatham	44psi EEEEEK! Well it will give you very light steering I suppose but a greasy roundabout in the wet might prove challenging. I haven't got an 1800 handbook but an Amazon one from '66 reads 20 front 23 rear for standard cross plies and "sports" 165s 15 which means radials, for 1 -2 persons. However the handbook in front of me has a sticker in for "braced tread tyres" which raises it to 26 front 28 rear with 2 extra pounds added for high speed driving which for Volvo means over 90mph (grin). Modern tyres are designed to run at higher pressures, this also reduces rolling resistance without compromising grip too much. Your tyres may say on the side "Maximum Pressure 45psi" but that doesn't mean that you get the best out of them at 44. I bet it rides like a skateboard at those pressures.

Sep 25th, 2008, 07:36	#9
brucelee34 Junior Member Last Online: Oct 16th, 2015 10:50 Join Date: Aug 2008 Location: Hertfordshire	I haven;t actually got to drive it anywhere as there are a few finishing touches. Maybe I should test the other tyres as they all look different levels. I have always put between 28 / 32 into a tyre and normally staggered the pressures between front and rear. I would think the levels you quoted sound fine to me. Once I have the new tyres i'll play about a little with the pressures and then maybe find some balance that works for me.

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